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Synthesis of 14‐{[(Un)substituted phenyl] or alkyl}‐14 H ‐dibenzo[ a , j ]xanthenes Using Yb(OTf) 3 as an Efficient Catalyst under Solvent‐free Conditions
Author(s) -
WANG LiMin,
SUI YuanYuan,
ZHANG Liang
Publication year - 2008
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200890196
Subject(s) - chemistry , catalysis , alkyl , condensation , solvent , medicinal chemistry , organic chemistry , thermodynamics , physics
A series of 14‐{[(Un)substituted phenyl] or alkyl}‐14 H ‐dibenzo[ a , j ]xanthenes were prepared under solvent‐free conditions by Yb(OTf) 3 catalyzed condensation reactions of β ‐naphthol with various aldehydes. The process presented here is operationally simple, environmentally benign and has good to excellent yields. Furthermore, the catalyst can be recovered conveniently and reused efficiently.