Process for the preparation of optionally-substituted 1,2,3,4-te

Details Process for the preparation of optionally-substituted 1,2,3,4-te Process for the preparation of optionally-substituted 1,2,3,4-te

1983-04-19

1984-11-27

Ramsuer, Robert W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20986, C07D20988

Patent

active

044852401

ABSTRACT:
In a process for the preparation of optionally-substituted 1,2,3,4-tetrahydro-9-cyanomethylcarbazol-1-ones of the formula ##STR1## wherein R denotes hydrogen, halogen, alkyl or alkoxy, by cyano-methylating optionally substituted 1,2,3,4-tetrahydrocarbazol-1-ones of the formula ##STR2## wherein R has the meanings mentioned above, the starting material of formula II is reacted, in a two-phase system consisting of water and a water-immiscible organic solvent, in the presence of a strong base and a known phase transfer catalyst, with a cyanomethylating agent of the formula

REFERENCES:
Mashkovskii et al., Chemical Abstracts, vol. 78, (1973), No. 4284d.

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