Synthesis of Tetrahydropyridazines
<i>via</i>
Pd‐Catalyzed Carboamination of Alkenyl Hydrazones
作者:Yajing Guo、Jinbo Zhao、Qian Zhang
DOI:10.1002/adsc.201901378
日期:2020.3.4
products and biologicallyactive entities, via Pd‐catalyzed carboamination of readily available alkenyl hydrazones with aryl and alkenyl halides. Preliminary studies showed its promise for enantioselective synthesis. This work offers an expedient access to the tetrahydropyridazine scaffold bearing substitution patterns, thus significantly increasing the availability of these derivatives for downstream
4-Pentenyl hydrazines, CH2=CHCH2CH2CH2NHNHR, react with phenylselenenyl sulfate, produced by diphenyl diselenide, ammonium persulfate and trifluoromethanesulfonic acid, to afford phenylseleno-substituted hexahydropyridazine or pyrrolidinamine derivatives depending on the nature of the substituent R. (C) 1997 Elsevier Science Ltd.
TEMPO-mediated allylic C–H amination with hydrazones
作者:Xu Zhu、Shunsuke Chiba
DOI:10.1039/c4ob00839a
日期:——
TEMPO-mediated reactions of alkenyl hydrazones afforded azaheterocycles via sp3 C–H allylic amination. The transformation is featured by a sequence of remote allylic H-radical shift and allylic homolytic substitution with hydrazone radicals.