Intermediate phenolic compounds for the catalytic synthesis of c

Details Intermediate phenolic compounds for the catalytic synthesis of c Intermediate phenolic compounds for the catalytic synthesis of c

1985-03-11

1986-07-01

Chan, Nicky

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

Organic compounds

Carboxylic acid esters

549416, 549411, 549408, 260395, 556449, 560109, 568766, 568650, 568646, 568640, 568592, C07C 69773, C07C 3919

Patent

active

045981604

ABSTRACT:
A catalytic synthesis of chromans in racemic or optically active forms, including intermediates thereto; the synthesis employs an asymmetric palladium (II) catalyzed oxidative cyclization of a 2-homoallylphenol and provides intermediates useful in making chromans, especially vitamin E in racemic or optically active forms.

REFERENCES:
patent: 2270634 (1942-01-01), Isler
patent: 3354181 (1967-11-01), Gloor et al.
patent: 3646222 (1972-02-01), Kawamatsu et al.

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