发明授权
US5705657A Isocyanate process for the preparation of 1,3A,8-trimethyl-1,2,3,3A, 8, 8A-hexahydro-pyrrole �2,3-B! indol-5 (3AS, 8AR) -hepthylcarbamate 失效
用于制备1,3A,8-三甲基-1,2,3,3a,8,8a-六氢 - 吡咯并[2,3-B]吲哚-5(3AS,8AR) - 庚基氨基甲酸酯的异氰酸酯法

Isocyanate process for the preparation of 1,3A,8-trimethyl-1,2,3,3A, 8,
8A-hexahydro-pyrrole �2,3-B! indol-5 (3AS, 8AR) -hepthylcarbamate
摘要:
A process for the preparation of 1,3a,8-trimethyl-1,2,3,3a,8,8a-hexahydro-pyrrole�2,3-b!indol-5(3aS,8aR)-heptylcarbamate, of formula (I) ##STR1## by reacting eseroline with heptylisocyanate in the presence of a metal cyanate and of a quaternary ammonium salt, in polar aprotic solvents.
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