SYNTHESIS OF 6-ALLYLCOUMARINS UNOXYGENATED AT C-7 POSITION

Authors
MALI RS MASSEY AP
Citation
Rs. Mali et Ap. Massey, SYNTHESIS OF 6-ALLYLCOUMARINS UNOXYGENATED AT C-7 POSITION, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 34(8), 1995, pp. 686-688
Citations number
13
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry → ACNP
ISSN journal
03764699
Volume
34
Issue
8
Year of publication
1995
Pages
686 - 688
Database
ISI
SICI code
0376-4699(1995)34:8<686:SO6UAC>2.0.ZU;2-X
Abstract
A convenient method for the synthesis of 6-allylcoumarins (6a-c) is de scribed from 2-allyloxy-3-methoxybenzaldehyde (2) Compound 2 on reacti on with phosphoranes (3a-c) provide (E)-ethykinnamates (4a-c) which on Claisen rearrangement (4a-c-->5a-c) followed by cyclisation give 6-al lylcoumarins (6a-c).