Document Type and Number:
Japanese Patent JPH0337535
Kind Code:
B2
Abstract:
For the preparation of polyfunctional organic compounds having at least one functional group of medium nucleophilic character selectively blocked by a tertiary butyl group, the corresponding unblocked compound is dissolved in a solution of concentrated sulfuric acid in an organic ether, and excess liquid isobutene is added to the solution at a temperature of not more than 5 DEG C.
Inventors:
KURISUCHIAN BIRU
Application Number:
JP9604782A
Publication Date:
June 05, 1991
Filing Date:
June 04, 1982
Export Citation:
Assignee:
ORUPEGEN MEDEITSUINISHU MOREKURAARUBIOROGITSUSHE FUORUSHUNGUSU GMBH
International Classes:
C07B51/00; C07B31/00; C07C41/05; C07C67/00; C07C67/04; C07C227/00; C07C227/16; C07C227/18; C07C229/22; C07C229/24; C07C239/00; C07C271/22
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