Process for the preparation of symmetrical 2,2-methylenebisbenzo

Details Process for the preparation of symmetrical 2,2-methylenebisbenzo Process for the preparation of symmetrical 2,2-methylenebisbenzo

1992-10-23

1993-07-20

Cintins, Marianne M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548257, 548259, C07D24920

Patent

active

052295214

ABSTRACT:
Compounds of formula ##STR1## wherein R.sub.1 is hydrogen alkyl, alkoxy, phenyl, phenylaklyl or halogen, and R.sub.2 is alkyl phenyl, phenylaklyl or cycloalkyl, are prepared by reacting a compound of formula ##STR2## with a compound of formula ##STR3## wherein R.sub.3 and R.sub.4 are alkyl, and formaldehyde, in a one-pot process in the absence of a solvent.

REFERENCES:
patent: 4642350 (1987-02-01), Davatz et al.
patent: 4681905 (1987-06-01), Kubota et al.
patent: 4937348 (1990-06-01), Kubota

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