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Chemical Structure| 49642-47-9 Chemical Structure| 49642-47-9

Structure of 49642-47-9

Chemical Structure| 49642-47-9

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Product Details of [ 49642-47-9 ]

CAS No. :49642-47-9
Formula : C6H12O2
M.W : 116.16
SMILES Code : CCC[C@@H](C)C(O)=O
MDL No. :MFCD06655998

Safety of [ 49642-47-9 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H227-H302+H312-H314
Precautionary Statements:P210-P264-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338+P310-P312-P363-P370+P378-P403+P235-P405-P501
Class:8
UN#:3265
Packing Group:

Application In Synthesis of [ 49642-47-9 ]

* 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 [ 49642-47-9 ]

[ 49642-47-9 ] Synthesis Path-Downstream   1~2

  • 2
  • [ 16957-70-3 ]
  • [ 49642-47-9 ]
YieldReaction ConditionsOperation in experiment
99.6% With hydrogen;[RuI((R)-SO3Na-H8-BINAP)(p-cymene)]I; In dichloromethane; water; at 80℃; under 18751.9 Torr; for 3h;Product distribution / selectivity; Into an autoclave under a nitrogen atmosphere, 0.37 g (3.3 mmol) of an (E)-2-methylpentenoic acid, 2.42 mg (1.7 mumol) of [RuI((R)-SO3Na13 H8-BINAP)(p-cymene)]I, 0.8 mL of degassed methylene chloride and 3 mL of degassed distilled water were added, and the atmosphere was replaced by hydrogen, and then the mixture was stirred at a reaction temperature of 80° C. under a hydrogen pressure of 2.5 MPa for 3 hours. After the reaction, a resulting mixture was extracted with additional methylene chloride and was treated in the same way as Example 6 to obtain 0.36 9 of a crude (R)-2-methylpentanoic acid. Conversion rate 99.6percent; selectivity 99.2percent; optical purity 95.0percent ee.
99.6% With hydrogen;[RuI((R)-SO3Na-H8-BINAP)(p-cymene)]I; In di-isopropyl ether; water; at 80℃; under 18751.9 Torr; for 3h;Product distribution / selectivity; Into an autoclave under a nitrogen atmosphere, 0.377 g (3.3 mmol) of an (E)-2-methyl-2-pentenoic acid, 2.42 mg (2.0 mumol) of [RuI((R)-SO3Na-H8-BINAP)(p-cymene)]I, 0.8 mL of degassed and distilled diisopropyl ether and 3 mL of degassed distilled water were added, and the atmosphere was replaced by hydrogen, and then the mixture was stirred at a reaction temperature of 80° C. under a hydrogen pressure of 2.5 MPa for 3 hours. After the reaction, treatment was carried out in the same way as Example 8 to obtain 0.35 g of a crude (R)-2-methylpentanoic acid. Conversion rate 100percent; selectivity 99.6percent; optical purity 94.4percent ee.
With hydrogen;[RuI(p-cymene){(R)-(SO3Na)2BINAP}]I; In dichloromethane; water; at 80℃; under 18751.9 Torr; for 6h;Autoclave; 11.4 g (0.1 mol) of TRANS-2-METHYL-2-PENTENOIC acid (available from Tokyo KASEI KOGYO CO., LTD.) and 59.3 mg (4.5 X 10-2 MMOL) of [RuI (p-cymene) { (R)- (S03NA) 2BINAP}] I were put in a 200 mL autoclave, and the atmosphere in the autoclave was replaced with nitrogen. 20 mL of degassed distilled water and 22 mL of degassed methylene chloride were added to the mixture, and TRANS-2-METHYL-2-PENTENOIC acid was reacted at 80°C for 6 hours under the same hydrogen pressure as Example 1, to obtain 11.2 G OF crude (2R) -methylpentanoic acid. The crude (2R) -methylpentanoic acid was distilled to obtain 10.5 g of purified (2R) -methylpentanoic acid: boiling point 105°C/11 mmHg; GC purity 99.1percent ; optical purity 89. 6percent ee; optical rotation [alpha] 20-17 (c 1.0, MEOH) ; mass spectrum (20 eV, m/e) 41,43, 45,55, 56,71, 73,74, 87,101, AND117 (M++1).
 

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