Haloacetylated enol ethers:<b>15</b>. Study of the regiochemistry of the cyclo-condensation of β-alkoxyvinyl trihalomethyl ketones with<i>N</i>-methyl thiourea
作者:Nilo Zanatta、Claudia Da C. Madruga、Patricia Da C. Marisco、Darlene C. Flores、Helio G. Bonacorso、Marcos A. P. Martins
DOI:10.1002/jhet.5570370531
日期:2000.9
A study of the regiochemistry of the cyclo-condensation reaction of ß-alkoxyvinyl trihalomethyl ketones with an unsymmetric dinucleophile N-methyl thiourea to afford a series of 1-methyl-3-(4,4,4-trifluoro[chloro]-3-oxo-1-butenyl)thioureas and the corresponding N-methyl pyrimidinethione derivatives is reported. The absolute assignment of the position of the N-methyl group in the pyrimidine ring was
ß-烷氧基乙烯基三卤代甲基酮与不对称二亲核试剂N-甲基硫脲的环缩合反应的区域化学研究,得到一系列1-甲基-3-(4,4,4-三氟[氯] -3-据报道有氧代-1-丁烯基)硫脲和相应的N-甲基嘧啶硫酮衍生物。通过基于二维HMBC和NOESY实验的nmr研究,获得了嘧啶环中N-甲基位置的绝对分配。