Ammonia → Methyl 3-oxovalerate

HRID 1614036Notes

Reaction equation

HRID 1614036 reaction equation
[C:1]([O:7][CH3:8])(=[O:6])[CH2:2][C:3]([CH3:5])=[O:4].[OH-].[Ca+2].[OH-].[C:12](Cl)(=O)CC.N>C(Cl)Cl.C(C(C)=O)C>[C:3]([CH2:2][C:1]([O:7][CH3:8])=[O:6])(=[O:4])[CH2:5][CH3:12]

Participants

7

Reactant 4

HCID 222AmmoniaHCID 7757Methyl acetoacetateHCID 62324Propionyl chlorideHCID 6093208Calcium Hydroxide

Product 1

HCID 121699Methyl 3-oxovalerateYield 89.9%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6569Methyl Ethyl KetoneSolvent

Procedure

Under the same conditions as in Example 1, 116 g (1.0 mol) of methyl acetoacetate in a mixture of 520 ml of methylene chloride and 30 ml of methyl ethyl ketone were reacted with 77.8 g (1.05 mol) of calcium hydroxide and 106.5 g (1.15 mol) of propionyl chloride. The pH in the subsequent reaction with ammonia was adjusted to 9.1. This gave 117 g (GC purity 79.0%) of methyl propionylacetate (yield 71.0%).

Sources & evidence

ORD record
ord-6e055fee64424e8183db7b1e9b64ebfd
Source dataset
uspto-grants-1993_03
Patent number
US05194671

Reaction notes

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