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Chemical Structure| 4128-00-1 Chemical Structure| 4128-00-1

Structure of 4128-00-1

Chemical Structure| 4128-00-1

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Product Details of [ 4128-00-1 ]

CAS No. :4128-00-1
Formula : C4H8N2O
M.W : 100.12
SMILES Code : O=C1NCC[C@@H]1N
MDL No. :MFCD11501144
InChI Key :YNDAMDVOGKACTP-VKHMYHEASA-N
Pubchem ID :12430456

Safety of [ 4128-00-1 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H314
Precautionary Statements:P280-P305+P351+P338-P310
Class:8
UN#:3259
Packing Group:

Application In Synthesis of [ 4128-00-1 ]

* 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 [ 4128-00-1 ]

[ 4128-00-1 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 1482-98-0 ]
  • [ 4128-00-1 ]
YieldReaction ConditionsOperation in experiment
96% With 1,1,1,3,3,3-hexamethyl-disilazane; In acetonitrile; at 20℃; for 48.0h;Heating / reflux; Step 1 : HMDS (67mL, 0.32mol) in ACN (5OmL) was added dropwise to a solution of 25a (5g, 32mmol) in ACN (5OmL) at room temperature. The resulting mixture was heated to reflux for 48h under the protection of N2. When the reaction was complete, the mixture was cooled, poured into cold methanol (5OmL) and stirred for 30min. The obtained mixture was evaporated to dryness and the residue was extracted with chloroform (150mL*3) under reflux. The combined chloroform solution was evaporated to provide crude 25b (3.1 g, 96%).
96% With 1,1,1,3,3,3-hexamethyl-disilazane; In acetonitrile; at 20℃; for 48.0h;Heating / reflux; Example 25 Preparation of 5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid ((S)-2-oxo-pyrrolidin-3-yl)-amide Preparation of (S)-3-Amino-pyrrolidin-2-one Step 1: HMDS (67 mL, 0.32 mmol) in ACN (50 mL) was added dropwise to a solution of 25a (5 g, 32 mmol) in ACN (50 mL) at room temperature. The resulting mixture was heated to reflux for 48 h under the protection of N2. When the reaction was complete, the mixture was cooled, poured into cold methanol (50 mL) and stirred for 30 min. The obtained mixture was evaporated to dryness and the residue was extracted with chloroform (150 mL*3) under reflux. The combined chloroform solution was evaporated to provide crude 25b (3.1 g, 96%).
82% With 1,1,1,3,3,3-hexamethyl-disilazane; In acetonitrile; for 48.0h;Reflux; Preparation of Compound 131Step 1:(3S)-3-aminopyrrolidin-2-one. A suspension of (S)-2, 4-diaminobutyric acid dihydrochloride (5.0 g, 27 mmol) and HMDS (65 mL) in MeCN (100 mL) was stirred at reflux for 48h. Reaction progress was monitored by TLC. After completion the reaction mixture was cooled in ice, quenched with MeOH (25 mL), concentrated, and the residue extracted with hot CHCI3 (3x 150 mL). The combined CHCI3 layer was concentrated to afford (35)-3-aminopyrrolidin-2-one (2.2 g, 82 %, brown solid). TLC: 30 % MeOH- CHCI3, Rf =0.5. MH+ = 100.9. XH NMR (DMSO-d6, 400MHz): 7.62 (bs, exchanged with D20; 1H), 3.21 (t, J=8.3Hz; 1H), 3.15-3.04 (m, 2H), 2.26-2.07 (m, 1H), 1.92 (bs, exchanged with D20; 1H), 1.70-1.57 (m, 1H).
 

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