Construction of Partially Protected Nonsymmetrical Biaryldiols via Semipinacol Rearrangement of o-NQM Derived from Enynones
The construction of partially protected nonsymmetrical biaryldiols catalyzed by AgBF4 has been achieved. The approach facilitates the formation of two new aryl rings and the introduction of two hydroxyl groups (one free and one TBS-protected) via the o-NQM generation/semipinacol rearrangement cascade, featuring high atom- and step-economy to afford a diverse array of partially protected nonsymmetrical biaryldiols under mild conditions.
Wu, Feng,Cheng, Tairan,Zhu, Shifa
supporting information
p. 71 - 75
(2021/01/09)
Asymmetric Induction in Hydroacylation by Cooperative Iminium Ion-Transition-Metal Catalysis
A new strategy for the rhodium-catalyzed enantioselective hydroacylation is described. This has been achieved through the merger of iminium ion catalysis and transition-metal catalysis such that asymmetric induction derives from a readily accessible, inexpensive chiral nonracemic secondary amine catalyst rather than a chiral nonracemic phosphine as is typical of conventional asymmetric hydroacylation methods.
Rastelli, Ettore J.,Truong, Ngoc T.,Coltart, Don M.
supporting information
p. 5588 - 5591
(2016/11/17)
An efficient three-component one-pot approach to the synthesis of 2,3,4,5-tetrahydro-1H-2-benzazepines by means of rhodium-catalyzed hydroaminomethylation
We have developed a novel and efficient three-component one-pot, catalytic approach for the synthesis of 2,3,4,5-tetrahydro-1H-2-benzazepines, using a rhodium catalyst that does not require phosphine. The isolated yields are excellent and the protocol tol
Vieira, Tiago O.,Alper, Howard
p. 485 - 487
(2008/09/20)
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