Premium
Synthesis and structural characterization of isomeric coumarino‐1,2‐oxaphosphole derivatives
Author(s) -
Petrov Petar J.,
Alexiev Alexi A.,
Petrov Galin,
Giorgi Gianluca
Publication year - 2005
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570420223
Subject(s) - chemistry , acetic anhydride , molecular orbital , ab initio , computational chemistry , stereochemistry , molecule , organic chemistry , catalysis
The coumarino‐[3,4‐ c ]‐3 H ‐10‐methyl‐2‐oxo‐2‐phenyl‐1,2‐oxaphosphole was prepared by the addition of PhPCl 2 to 3‐acetylcoumarin in the presence of acetic anhydride. Its conversion to the isomeric coumarino‐[3,4‐ c ]‐9 H ‐9‐methyl‐2‐oxo‐2‐phenyl‐1,2‐oxaphosphole was studied in different reaction conditions. The structures of the two isomers were determined by X‐ray crystallography and by ab initio molecular orbital calculations.