Mastagli et al., Bulletin de la Societe Chimique de France, 1956, p. 796
作者:Mastagli et al.
DOI:——
日期:——
Knoevenagel, Justus Liebigs Annalen der Chemie, 1898, vol. 303, p. 246
作者:Knoevenagel
DOI:——
日期:——
Catalysis by Amberlyst A-21: A Greener Approach to 4,5,6,7-Tetrahydro-1H-indazol-3(2<i>H</i>)-ones via Construction of Cyclohexanones
作者:Manam Sreenivasa Rao、Meda Haritha、Sunder Kumar Kolli、Mandava V. Basaveswara Rao、Manojit Pal
DOI:10.1080/00397911.2013.844260
日期:2014.4.18
The 4,5,6,7-tetrahydro-1H-indazol-3(2H)-one derivatives have been synthesized in good yields via a two-step method in a single pot. The initial step involved the construction of cyclohexanone ring from aromatic aldehydes and beta-ketoester in i-PrOH using an inexpensive and reusable catalyst (i.e., Amberlyst A-21) under mild reaction conditions. The utility of this catalyst has been demonstrated in synthesizing a range of cyclohexanone derivatives. The catalyst can be recovered and recycled, which makes this procedure simple, convenient, economically viable, and environmental friendly. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]
Knoevenagel, Justus Liebigs Annalen der Chemie, 1898, vol. 303, p. 244
作者:Knoevenagel
DOI:——
日期:——
Sorokin; Grigor'ev; Ramazanov, Russian Journal of Organic Chemistry, 2000, vol. 36, # 6, p. 781 - 784