Radical substitution with azide: TMSN<sub>3</sub>–PhI(OAc)<sub>2</sub>as a substitute of IN<sub>3</sub>
作者:Christian Marcus Pedersen、Lavinia Georgeta Marinescu、Mikael Bols
DOI:10.1039/b500037h
日期:——
TMSN3 and PhI(OAc)2 were found to promote high-yield azide substitution of ethers, aldehydes and benzal acetals. The reaction is fast and occurs at zero to ambient temperature in acetonitrile. However, it is essential for the reaction that TMSN3 is added subsequent to the mixture of PhI(OAc)2 and the substrate. A primary deuterium kinetic isotope effect was found for the azidonation of benzyl ethers
C(sp<sup>3</sup>)–H Azidation Reaction: A Protocol for Preparation of Aminals
作者:Jianyang Dong、Qing Xia、Changcun Yan、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1021/acs.joc.8b00235
日期:2018.4.20
tetrahydro-β-carbolines, and cyclic benzyl ethers gave high yields under mild conditions. The protocol could be carried out on a gram scale without a decrease in the yield, and the aminal products could be readily transformed into complex aminals.
corresponding 1-azidated products (2) possessing the N,O-acetal partial structure. The azido group of the N,O-acetal behaved as a leaving group in the presence of catalytic iron(III) chloride, and 1-aryl or allyl phthalan and isochroman derivatives were obtained by nucleophilic arylation or allylation, respectively. Meanwhile, a double nucleophilic substitution toward the 1-azidated products (2) occurred