3-Methylthio-pyrano[4,3-c]pyrazol-4(2H)-ones from 3-(bis-methylthio)methylene-2H-pyran-2,4-diones and hydrazines
作者:Yu-Xin Li、You-Ming Wang、Xiao-Ping Yang、Su-Hua Wang、Zheng-Ming Li
DOI:10.1002/hc.10158
日期:——
A useful synthesis of 3-methylthio-6-methyl-pyrano[4,3-c]pyrazol-4(2H)-ones via 3-(bis-methylthio)methylene-5,6-dihydro-6-alkyl(aryl)-2H-pyran-2,4-dione with hydrazine as well as methyl and phenyl hydrazines is described and the mechanism of the formation is discussed. © 2003 Wiley Periodicals, Inc. Heteroatom Chem 14:342–344, 2003; Published online in Wiley InterScience (www.interscience.wiley.com)
3-甲硫基-6-甲基-吡喃并[4,3-c]吡唑-4(2H)-酮通过3-(双-甲硫基)亚甲基-5,6-二氢-6-烷基(芳基)的有用合成描述了 -2H-pyran-2,4-dione 与肼以及甲基和苯基肼,并讨论了形成机制。© 2003 Wiley Periodicals, Inc. 杂原子化学 14:342–344, 2003; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.10158