Hydroxyl-directed trifluoromethylation of hydrazones
摘要:
The trifluoromethylation of hydrazones derived from salicyl aldehydes and N-aminopiperidine and N-aminomorpholine through the generation of chelate difluoroboron complexes, which subsequently interact with Me(3)SiCF(3) in the presence of sodium acetate, has been developed.
Oxidative C(sp<sup>2</sup>)–H Phosphonation of Aldehyde Hydrazones
作者:Pan Xu、Zhongkai Wu、Nengneng Zhou、Chengjian Zhu
DOI:10.1021/acs.orglett.6b00257
日期:2016.3.4
A K2S2O8/Cu(OAc)2-mediated oxidative C–H/P–H cross-coupling of aldehyde hydrazones with diphenylphosphine oxide for the direct preparation of functionalized α-iminophosphine oxides is reported. The reaction shows good functional group tolerance and proceeds smoothly under mild conditions. This strategic protocol for C–P bond formation is facilitated by a net oxidative aminyl radical–polar crossover
据报道,AK 2 S 2 O 8 / Cu(OAc)2介导的乙与二苯基膦氧化物的氧化C–H / P–H交叉偶联可直接制备官能化的α-亚氨基膦氧化物。该反应显示出良好的官能团耐受性,并且在温和条件下平稳进行。净氧化性胺基自由基-极性交叉过程促进了C-P键形成的这一战略方案。