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Reactions of 4-Oxo-4H-1-benzopyran-3-carboxaldehydes with Pentane-2,4-dione in Acidic Medium—a New Route to Dihydroxybenzophenone Derivatives
作者:Chandrakanta Bandyopadhyay、Kumar Ranabir Sur、Ranjan Patra
DOI:10.1039/a804173c
日期:——
Reaction of the title aldehyde 1 with acetylacetone 2 gives benzophenone 8 along with the Knoevenagel-type product 5 under acidic conditions.
在酸性条件下,标题醛 1 与
乙酰丙酮 2 反应得到
二苯甲酮 8 和 Knoevenagel 型产物 5。
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Chemoselective Reduction of Some Condensates derived from Chromone-3-carbaldehyde using Sm and Zn
作者:Satyajit Saha、Tarun Ghosh、Chandrakanta Bandyopadhyay
DOI:10.1080/00397910802139049
日期:2008.6.27
Condensates 4-6 undergo reductive dimerization with Sm in THF containing aqueous NH4Cl to produce 7-9, whereas with Zn under similar reaction condition 3-5 produce 10-12.
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Ghosh, Chandra Kanta; Sahana, Sirin; Bandyopadhyay, Chandrakanta, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1993, vol. 32, # 6, p. 624 - 629
作者:Ghosh, Chandra Kanta、Sahana, Sirin、Bandyopadhyay, Chandrakanta
DOI:——
日期:——
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Ghosh, Chandra Kanta; Bhattacharyya, Atanu; Ghosh-Dastidar, Partha Pratim, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1987, vol. 26, # 1-12, p. 423 - 426
作者:Ghosh, Chandra Kanta、Bhattacharyya, Atanu、Ghosh-Dastidar, Partha Pratim
DOI:——
日期:——
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GHOSH, CHANDRA KANTA;BHATTACHARYYA, ATANU;GHOSH-DASTIDAR, PARTHA PRATIM, INDIAN J. CHEM., 26,(1987) N 5, 423-426
作者:GHOSH, CHANDRA KANTA、BHATTACHARYYA, ATANU、GHOSH-DASTIDAR, PARTHA PRATIM
DOI:——
日期:——