Detail of "22519-64-8"

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An efficient and green synthesis of 5-oxo-5,6,7,8-tetrahydro-4H-benzo[b]pyran derivatives promoted by InCl3

An efficient and green synthesis of 5-oxo-5,6,7,8-tetrahydro-4H-benzo[b]pyran derivatives promoted by InCl3.4H2O under microwave irradiation. Hu, Xue Yuan; Fan, Xue Sen; Zhang, Xin Ying; Qu, Gui Rong; Li, Yan Zhen (School of Chemical and Environmental Sciences, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, Peop. Rep. China). Chinese Chemical Letters, 16(7), 886-888 (English) 2005 Chinese Chemical Society. CODEN: CCLEE7. ISSN: 1001-8417. 22519-64-8 which is the cas registry number is also used here. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) A rapid and facile prepn. of benzo[b]pyran derivs. through condensation of chalcone and 5,5-dimethyl-1,3-cyclohexanedione under microwave irradn. in the presence of catalytic amt. of InCl3×4H2O was developed. With its high efficiency, operational simplicity and environmental benignancy, this method may provide a useful alternative for the prepn. of benzo-[b]-pyran derivs. .