Regioselective Rhodium(I)-Catalyzed Hydroarylation of Protected Allylic Amines with Arylboronic Acids
作者:Gavin Chit Tsui、Frederic Menard、Mark Lautens
DOI:10.1021/ol100974f
日期:2010.6.4
A novel regioselective rhodium(I)-catalyzed hydroarylation of unactivated alkenes with arylboronicacids is described. The catalytic system employs [Rh(COD)OH]2 and BINAP to effect the addition of various arylboronicacids to protected allylic amines. The regioselectivity was found to be highly dependent on the protecting group, favoring the linear addition product with up to 92% yield and >20:1 regioselectivity
Dimethylamine as a Substrate in Hydroaminoalkylation Reactions
作者:Jens Bielefeld、Sven Doye
DOI:10.1002/anie.201708959
日期:2017.11.20
Size matters: For the first time since catalytic hydroaminoalkylation chemistry started 37 years ago, dimethylamine can efficiently be added to alkenes using an inexpensive and easilyobtainable Ti catalyst. The size of the flask determines whether the reaction gives monohydroaminoalkylation or dihydroaminoalkylation.
2-Arylazocarboxylate and 2-arylazocarboxamide derivatives can serve as replacements of typical Mitsunobu reagents such as diethylazodicarboxylate. A systematic investigation of the reactivity and physical properties of those azo compounds has revealed that they have an excellent ability as Mitsunobu reagents. These reagents show similar or superior reactivity as compared to the known azo reagents
Electrochemical chlorination of least hindered tertiary and benzylic C(sp<sup>3</sup>)–H bonds
作者:Jianyou Zhao、Jiatai Zhang、Pengkai Fang、Jintao Wu、Fan Wang、Zhong-Quan Liu
DOI:10.1039/d3gc03849a
日期:——
Functionalization of C(sp3)–Hbonds should greatly benefit the synthesis of natural products and pharmaceuticals. One of the greatest challenges is to develop new synthetic strategies for industrial applicability. Herein we report an electrochemical method for the chlorination/bromination of tertiary and secondary benzylicC(sp3)–Hbonds. This method tolerates many functional groups. Moreover, this