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Chemical Structure| 1001353-87-2 Chemical Structure| 1001353-87-2

Structure of Boc-4,4-DiMe-Pro-OH
CAS No.: 1001353-87-2

Chemical Structure| 1001353-87-2

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Product Details of [ 1001353-87-2 ]

CAS No. :1001353-87-2
Formula : C12H21NO4
M.W : 243.30
SMILES Code : C(C)(C)(C)OC(=O)N1CC(C[C@H]1C(=O)O)(C)C
MDL No. :MFCD11040193
InChI Key :ACHKRIQLSCPKKK-QMMMGPOBSA-N
Pubchem ID :25067306

Safety of [ 1001353-87-2 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H332-H335
Precautionary Statements:P261-P280-P305+P351+P338

Application In Synthesis of [ 1001353-87-2 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 1001353-87-2 ]

[ 1001353-87-2 ] Synthesis Path-Downstream   1~35

  • 1
  • [ 1001353-86-1 ]
  • [ 1001353-87-2 ]
YieldReaction ConditionsOperation in experiment
91% With lithium hydroxide; In tetrahydrofuran; methanol; water; at 20℃; 163C. (S)-4,4-Dimethylpyrrolidine-2-carboxylic acid To a solution of (S)-1-tert-butyl 2-ethyl 4,4-dimethylpyrrolidine-1,2-dicarboxylate (1.0 g, 3.7 mmol) in MeOH/H2O/THF (20/15/10 mL) was added lithium hydroxide monohydrate (0.78 g, 18.5 mmol), and the resulting mixture was stirred at room temperature overnight. The solvent was removed and the resulting residue was acidified with phosphoric acid to pH 3. The aqueous layer was extracted with EtOAc, washed with brine, dried over Na2SO4, and filtered. The filtrate was evaporated to furnish the crude product (0.82 g, 91%). 1H NMR (CD3OD, 400 MHz) δ 4.21 (m, 1H), 3.24-3.29 (m, 1H), 3.11-3.14 (m, 1H), 2.08 (m, 1H), 1.75 (m, 1H), 1.40 (s, 9H), 1.11 (s, 3H), and 1.04 (s, 3H).
  • 2
  • [ 1001353-87-2 ]
  • 4,4-dimethyl-L-proline [ No CAS ]
YieldReaction ConditionsOperation in experiment
93% With trifluoroacetic acid; In dichloromethane; at 20℃; for 4h; The crude material from above was dissolved in methylene chloride (30 mL), and trifluoroacetic acid (5 mL) was added. The reaction mixture was stirred at room temperature for 4 h. After concentrating to dryness, the residue was passed through a MCX cartridge, the cartridge was eluted with a 2 N solution of ammonia in methanol and removal of the solvents gave (163C) as a solid (450 mg, 93%). 1H NMR (CD3OD, 400 MHz) δ 3.28 (m, 1H), 3.11 (m, 1H), 2.24-2.30 (m, 1H), 1.95-2.00 (m, 1H), 1.17 (s, 3H), and 1.16 (s, 3H).
  • 4
  • (S)-ethyl N-tert-butoxycarbonylpyroglutamate [ No CAS ]
  • [ 1001353-87-2 ]
  • 5
  • [ 7149-65-7 ]
  • [ 1001353-87-2 ]
  • 6
  • [ 158392-74-6 ]
  • [ 1001353-87-2 ]
  • 7
  • (S)-5-Hydroxy-4,4-dimethyl-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester [ No CAS ]
  • [ 1001353-87-2 ]
  • 8
  • [ 138423-86-6 ]
  • [ 1001353-87-2 ]
YieldReaction ConditionsOperation in experiment
95% With lithium hydroxide monohydrate; In water; at 0 - 20℃; for 2h;Inert atmosphere; Sealed tube; To a solution of compound 15-2 (4.85 g, 18.86 mmol) in THF (40 mL) was added lithium hydroxide monohydrate aqueous solution (1.5 g, 20 mL) dropwise at 0 C. At the end of the addition, the mixture was stirred at rt for 2.0 hrs. After the reaction was completed, the THF solvent was removed and 50 mL of water was added to the mixture. The resulting mixture was washed with EtOAc (30 mL x 3). The aqueous phase was adjusted to pH 1 with hydrochloric acid (1 M) and extracted with EtOAc (50 mL x 3). The combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo to give the title compound as a white solid (4.35 g, 95%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) mlz: 244.5 [M+H]+; 'H NMR (400 MHz, CD3OD) δ (ppm): 4.34-4.31 (m, 1H), 3.28-3.22 (m, 1H), 3.20-3.13 (m, 1H), 2.23-2.18 (m, 1H), 1.85-1.80 (m, 1H), 1.46 (s, 9H), 1.01-0.99 (m, 3H), 0.86-0.84 (m, 3H).
95% With lithium hydroxide monohydrate; In tetrahydrofuran; water; at 0 - 20℃; for 2h; Compound 10-2 (4.85 g, 18.86 mmol) was dissolved in THF (40 mL) and an aqueouslithium hydroxide monohydrate solution (1.5 g, 20 mL) was added to the system at 0 C.The mixture was reacted at room temperature for 2.0 hours. After completion of thereaction, THF was removed, water (50 mL) was added and the mixture was washed with EtOAc(30 mL × 3). After partitioning, the aqueous layer was adjusted to pH 1 with dilutehydrochloric acid (1 M) The combined organic phases were washed with saturated brine anddried over anhydrous Na 2SO 4Dried and concentrated to give 4.35 g of white solid, yield:95%.
With water; lithium hydroxide; In ethanol; at 0 - 20℃; for 6h; Example 14, Step dA solution of proline N14c (500 mg, 1.94 mmol) in EtOH (8 mL) was cooled to 0 C, LiOH (93 mg, 3.89 mmol) in water (4 mL) was added, and the reaction mixture was stirred at RT for 6 h. It was then concentrated under reduced pressure, and the resulting crude material was dissolved in water and extracted with Et20 (20 mL). The aqueous phase was acidified to pH 4 with 1 N HC1 and extracted withEtOAc (100 mL). The organic phase was washed with brine, dried over Na2S04 and concentrated in vacuo to afford acid 14d (454 mg). XH NMR (CDC13, δ = 7.26 ppm, 400 MHz): δ 4.42-4.23 (m, 1H), 3.26 (d, J = 10.8, 1H), 3.10 (d, J = 10.8, 1H), 2.30- 2.20 (m, 1H), 1.96-1.82 (m, 1H), 1.50/1.45 (s, 9H), 1.11/1.07 (s, 6H).
  • 9
  • [ 1001353-87-2 ]
  • [ 99-73-0 ]
  • [ 1613055-95-0 ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In dichloromethane; at 0 - 20℃; for 2h;Inert atmosphere; Sealed tube; To a solution of compound 15-3 (3.18 g, 13.1 mmol) and compound 1-12-2 (3.63 g, 13.1 mmol) in DCM (40 mL) was added Et3N (3.9 mL, 26.3 mmol) dropwise at 0 C. At the end of the addition, the mixture was stirred at rt for 2.0 hrs. After the reaction was completed, the mixture was quenched with water (50 mL). The aqueous layer was extracted with DCM (50 mL x 3). The combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo to give the crude product (3.27 g), which was used for the next step without further purification. The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) mlz: 413.5 [M+H]+.
With triethylamine; In dichloromethane; at 0 - 20℃; for 2h; The compound 10 - 3 (3.18 g, 13.1 mmol) of the compound 3 - 1 - 0 (3.63 g, 13.1 mmol) dissolved in DCM (40 ml) in, 0 C lower, slowly into the Et3 N (3.9 ml, 26.3 mmol), then completing, the reaction at room temperature for 2.0 hours. After the reaction is complete, the addition of water (50 ml) quenching the reaction, the water layer DCM (50 ml × 3) extraction, the combined organic phase, saturated salt water for washing, anhydrous Na2 SO4 Drying, concentrated to obtain the crude product 3.27 g, directly used for the next step reaction.
  • 10
  • 4,4-dimethyl-pyrrolidine-2-carboxylic acid methyl ester [ No CAS ]
  • [ 1001353-87-2 ]
  • 11
  • [ 1001353-87-2 ]
  • [ 1613055-96-1 ]
  • 12
  • [ 1001353-87-2 ]
  • [ 1613055-97-2 ]
  • 13
  • [ 1001353-87-2 ]
  • [ 1613055-98-3 ]
  • 14
  • [ 1001353-87-2 ]
  • [ 1613055-99-4 ]
  • 15
  • [ 1001353-87-2 ]
  • [ 1613056-00-0 ]
  • 16
  • [ 1001353-87-2 ]
  • [ 1613056-01-1 ]
  • 17
  • [ 1001353-87-2 ]
  • [ 1575-37-7 ]
  • C18H26BrN3O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
To a solution of compound 15-3 (2.6 g, 10.7 mmol) and HATU (4.88 g, 12.84 mmol) in THF (30 mL) was added DIPEA (1.95 mL, 11.8 mmol) at 0 C. After stirring at 0 C for 0.5 hr, compound 2-10 (2.22 g, 11.9 mmol) was added in a portionwise manner. At the end of the addition, the mixture was stirred at rt for 4.0 hrs. After the reaction was completed, the mixture was quenched with water (50 mL), the THF solvent was removed, and the resulting mixture was extracted with EtOAc (50 mL x 3). The combined organic layers were washed with brine, dried over anhydrous Na2S04 and concentrated in vacuo. The residue was dissolved in glacial acetic acid (20 mL), and the solution was stirred at 40 C overnight. After the reaction was completed, the mixture was concentrated in vacuo. The residue was dissolved in EtOAc (100 mL). The mixture was washed with Na2C03 aqueous solution (50 mL x 3), dried over anhydrous Na2S04 and concentrated in vacuo. The residue was purified by silica gel column chromatography (PE/EtOAc (v/v) = 1/2) to give the title compound (2.70 g, 65%). The compound was characterized by the following spectroscopic data: MS (ESI, pos.ion) mlz: 395.5 [M+H] ; and NMR (400 MHz, CDC13) δ (ppm): 7.71-7.70 (q, 1H), 7.33, 7.30 (d, d, 1H), 7.20, 7.18 (d, d, 1H), 5.32-5.27 (m, 1H), 3.41-3.34 (m, 1H), 3.30-3.23 (m, 1H), 2.38-2.32 (m, 1H), 2.00-1.94 (m, 1H), 1.41 (s, 9H), 1.01-0.99 (m, 3H), 0.86-0.84 (m, 3H).
  • 18
  • [ 1001353-87-2 ]
  • C49H66N8O6S [ No CAS ]
  • 19
  • [ 1001353-87-2 ]
  • C31H38BrN3O2S [ No CAS ]
  • 20
  • [ 1001353-87-2 ]
  • C37H50BN3O4S [ No CAS ]
  • 21
  • [ 1001353-87-2 ]
  • [ 212890-86-3 ]
YieldReaction ConditionsOperation in experiment
75% With borane-THF; In tetrahydrofuran; at 0℃; for 3h;Inert atmosphere; Compound 10-3 (1.13 g, 4.66 mmol) was dissolved in THF (10 mL) and borane (10mL, 1 M in THF) was slowly added dropwise to the reaction flask under nitrogen at 0 C. . After the reaction was completed, the reaction was quenched with methanol (10 mL).The reaction solution was concentrated and purified by column chromatography (eluent: PE/ EtOAc (v / v) = 3/2) to give 0.8 g of a colorless oil Rate: 75%.
With borane-THF; In tetrahydrofuran; at 0 - 20℃; Step 1: Into a 250-mL 3-necked round-bottom flask, was placed (2S)-1-(tert-butoxycarbonyl)- 4,4-dimethylpyrrolidine-2-carboxylic acid (3.9 g, 16.03 mmol, 1.00 equiv), and THF (50.00 mL). This was followed by the addition of BTb-THF (48.06 mL, 48.07 mmol, 3.00 equiv) dropwise with stirring at 0 ?C. The resulting solution was stirred for overnight at room temperature. The reaction was then quenched by the addition of 50 mL of MeOH. The reaction mixture was then heated to reflux for 3 h. The reaction mixture was cooled to room temperature. The resulting mixture was concentrated. The resulting solution was extracted with 3x100 mL of dichloromethane dried over anhydrous sodium sulfate and concentrated. This resulted in tert-butyl (2S)-2-(hydroxymethyl)-4,4-dimethylpyrrolidine-1-carboxylate.
  • 22
  • [ 1001353-87-2 ]
  • [ 1369594-35-3 ]
  • 23
  • [ 1001353-87-2 ]
  • [ 1369594-36-4 ]
  • 24
  • [ 1001353-87-2 ]
  • C14H21I2N3O2 [ No CAS ]
  • 25
  • [ 1001353-87-2 ]
  • C14H22IN3O2 [ No CAS ]
  • 26
  • [ 1001353-87-2 ]
  • C45H60N6O4S [ No CAS ]
  • 27
  • [ 1001353-87-2 ]
  • C35H44N6S*4ClH [ No CAS ]
  • 28
  • [ 1001353-87-2 ]
  • (S)-4,4-Dimethyl-pyrrolidine-2-carboxylic acid methyl ester; hydrochloride [ No CAS ]
YieldReaction ConditionsOperation in experiment
With thionyl chloride; In methanol; at 0 - 20℃; for 3.41667h; To a solution of 1 (23.7 g, 97.4 mmol, 1.00 eq.) in MeOH (100 mL) was slowly added thionyl chloride (14.2 mL, 195 mmol, 2.00 eq.) at 0 C over 25 mm. The mixture was stirred at room temperature for 3h, then concentrated under reduced pressure. The residue was dissolved in DCM (170 mL) and added Et3N (41 mL, 292 mmol, 3.00 eq.) at 0 C. To the mixture, trityl chloride (27.2 g, 97.4 mmol, 1.00 eq.) was added at 0 C, and the mixture warmed to room temperature and continued stirring for 17 h. The mixture was filtered and washed with DCM (100 mL). Filtrate was washed with saturated NaHCO3 (170 mL*2), and back-extracted with DCM (50 mL*1). The combined organic layers were dried over Na2SO4, filtered, and concentrated to obtain compound 2 (43.51 g, crude, pale brown oil), which was used directly without further purification.
  • 29
  • [ 1001353-87-2 ]
  • C27H29NO2 [ No CAS ]
  • 30
  • [ 1001353-87-2 ]
  • C26H29NO [ No CAS ]
  • 31
  • [ 1001353-87-2 ]
  • C26H27NO [ No CAS ]
  • 32
  • [ 1001353-87-2 ]
  • C40H43NOSi [ No CAS ]
  • 33
  • [ 1001353-87-2 ]
  • C21H29NOSi [ No CAS ]
  • 34
  • [ 1001353-87-2 ]
  • tert-butyl (2S)-2-(2-bromo-3-hydroxyphenoxymethyl)-4,4-dimethylpyrrolidine-1-carboxylate [ No CAS ]
  • 35
  • [ 1001353-87-2 ]
  • 2-bromo-3-[[(2S)-4,4-dimethylpyrrolidin-2-yl]methoxy]phenol [ No CAS ]
 

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