Title:
DEALKOXYCARBONIZATION METHOD OF CARBOXYLIC ACID ESTER
Document Type and Number:
Japanese Patent JPS5328110
Kind Code:
A
Abstract:
A carboxylic acid ester activated in alpha -position by a keto, ester or nitrile group, i.e. of the formula where X is COOR4, COR5 or CN, and the several R's can have various meanings but only R1 and R2 can be hydrogen, is decarbalkoxylated by heating in the presence of a salt, e.g. sodium chloride, and a phosphorus-containing solvent such as a phospholine oxide, phospholane oxide or phosphetane oxide of the formulas +TR wherein a-k and R can have varied definitions. Water is present either at the outset or end of the reaction before product separation. The reaction proceeds smoothly and in good yields.
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Inventors:
RAINHARUTO RANCHIYU
HERUMUUTO HOFUMAN
HERUMUUTO HOFUMAN
Application Number:
JP10117277A
Publication Date:
March 16, 1978
Filing Date:
August 25, 1977
Export Citation:
Assignee:
BAYER AG
International Classes:
B01J23/00; B01J31/00; C07B31/00; C07B37/06; C07B61/00; C07C45/00; C07C45/65; C07C45/67; C07C49/00; C07C67/32; C07C67/00; C07C67/30; C07C69/00; C07C69/22; C07C69/52; C07C69/74; C07C253/00; C07C255/03; C07C255/46; (IPC1-7): B01J23/04; B01J27/08; B01J27/24; B01J31/02; C07B25/00; C07C49/00; C07C69/00; C07C121/00; C07C149/00