p-Tosylhydrazon des Isopropyl-methyl-ketons;3-Methyl-2-butanon-tosylhydrazon;3-Methyl-butanon-(2)-tosylhydrazon;4-methyl-N-(3-methylbutan-2-ylideneamino)benzenesulfonamide
CAS
5508-40-7
化学式
C12H18N2O2S
mdl
——
分子量
254.353
InChiKey
ZDWSGHGRAVPXGS-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
物化性质
计算性质
ADMET
安全信息
SDS
制备方法与用途
上下游信息
反应信息
文献信息
表征谱图
同类化合物
相关功能分类
相关结构分类
物化性质
熔点:
121-122 °C(Solv: water (7732-18-5); ethanol (64-17-5))
A visible-light-driven and room temperature photo-Wolff-Kischner reaction of sulfur ylides and N-tosylhydrazones has been developed for the first time to provide modular access to alkene synthesis. The high functional group tolerance and broad substrate scope were demonstrated by more than 60 examples. Both E- and Z-olefinic stereochemistry in the products could be controlled with excellent stereoselectivity
A convenient method for the synthesis of indoles has been developed by the sequential orchestration of the cross-coupling reaction of o-haloaniline and PIFA oxidation of the resulting 2-alkenylanilines. A highlight of this two-step indolesynthesis is a modular strategy which is applicable to both acyclic and cyclic starting materials. Particularly noteworthy is the regiochemistry that is complementary
Catalyst-Free Synthesis of Spiropyrazolines from Chalcones and Cyclic Ketone N-Tosylhydrazones
作者:Hui-Jing Li、Yan-Chao Wu、Qin-Xi Wu、Hong-Shuang Wang、Zhen-Guo Zhang、Chen-Chao Wang
DOI:10.1055/s-0034-1379616
日期:——
Treatment of cyclic ketone N-tosylhydrazones with chalcones in the presence of cesium carbonate at 110 degrees C affords spiropyrazolines with high selectivity and excellent yields. This protocol possesses many advantages such as readily available and stable starting materials, high selectivity, operational simplicity, and catalyst-free conditions.