Synthesis of aryl ethers from benzoates through carboxylate-directed C-H-activating alkoxylation with concomitant protodecarboxylation
One in, one out: In the presence of a copper/silver bimetallic catalyst system, aromatic carboxylate salts undergo ortho C-H alkoxylation with concomitant loss of the carboxylate directing group in a protodecarboxylation step (see scheme, FG=functional group). This process provides a convenient synthetic access to the important class of aromatic ethers from widely available carboxylic acids. Copyright
Bhadra, Sukalyan,Dzik, Wojciech I.,Goo?en, Lukas J.
supporting information
p. 2959 - 2962
(2013/04/10)
NOVEL BORATE DERIVATIVES AND THEIR APPLICATIONS
Borates, compositions comprising chiral (cyclic and acyclic) and achiral (cyclic and acyclic) borates; chiral (cyclic and acyclic) and achiral (cyclic and acyclic) biborates; and methods for their synthesis. Additionally, a significantly improved synthetic protocol for the synthesis of wide range of boronates starting from borates or biborates and Grignard or organolithium reagents that can be used for kilo lab and commercial scale production.
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(2012/12/13)
Ready Preparation of Trialkoxyboranes and Dialkoxyboranes by LiBEt3H-Promoted Reaction of BH3 in Tetrahydrofuran with Alcohols
A catalytic amount of LiBEt3H (1percent) promoted markedly the reactions of BH3 in tetrahydrofuran (THF) with stoichiometric amounts of alcohols (1:2 and 1:3) to provide corresponding trialkoxyboranes and dialkoxyboranes quantitatively under mild reaction conditions.