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Efficient synthesis of 14‐substituted‐14‐H‐dibenzo[ a,j ]xanthenes using silica supported sodium hydrogen sulfate or amberlyst‐15 catalyst
Author(s) -
Kumar Chebolu Naga Sesha Sai Pavan,
Srinivas Chiguru,
Sadhu Partha Sarathi,
Rao Vaidya Jayathirtha,
Palaniappan Srinivasan
Publication year - 2009
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.151
Subject(s) - chemistry , hydrogen sulfate , catalysis , organic chemistry , alkyl , solvent , heterogeneous catalysis , sodium sulfate , aryl , hydrogen , sulfate , sodium , ionic liquid
ilica supported sodium hydrogen sulfate (NaHSO 4 ·SiO 2 ) or amberlyst‐15 acts as an efficient heterogeneous catalyst for the preparation of 14‐alkyl and aryl‐14‐H‐dibenzo[ a , j ]xanthenes with various aldehydes and β‐naphthol in dichloroethane solvent in excellent yields. Synthesis of three new compounds are reported using this methodology. Recyclable nature of the amberlyst‐15 catalyst was also studied and the catalyst can be reused. J. Heterocyclic Chem., (2009).