Sterically Unprotected Nucleophilic Boron Cluster Reagents
نویسندگان
چکیده
منابع مشابه
Highly nucleophilic dipropanolamine chelated boron reagents for aryl-transmetallation to iron complexes.
New aryl- and heteroarylboronate esters chelated by dipropanolamine are synthesised directly from boronic acids. The corresponding anionic borates are readily accessible by deprotonation and demonstrate an increase in hydrocarbyl nucleophilicity in comparison to other common borates. The new borates proved competent for magnesium or zinc additive-free, direct boron-to-iron hydrocarbyl transmeta...
متن کاملTitle 1,3,2,5-diazadiborinine Featuring Nucleophilic and Electrophilic Boron Centres
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متن کامل1,3,2,5-Diazadiborinine featuring nucleophilic and electrophilic boron centres
The seminal discovery in 1865 by Kekulé that benzene nucleus exists with cyclic skeleton is considered to be the beginning of aromatic chemistry. Since then, a myriad of cyclic molecules displaying aromatic property have been synthesized. Meanwhile, borazine (B3N3H6), despite the isostructural and isoelectronic relationships with benzene, exhibits little aromaticity. Herein, we report the synth...
متن کاملBoron Arylations of Subporphyrins with Aryl Zinc Reagents.
Boron arylations of B-(methoxo)triphenylsubporphyrin have been developed with a combined use of ArZnI⋅LiCl and trimethylsilyl chloride. Aryl zinc reagents bearing bromo, cyano, amide, and ester groups can be employed for the B-arylation reaction to provide the corresponding B-arylated subporphyrins in moderate yields. Postmodifications of B-arylated subporphyrins have been demonstrated without ...
متن کاملSelection of boron reagents for Suzuki-Miyaura coupling.
Suzuki-Miyaura (SM) cross-coupling is arguably the most widely-applied transition metal catalysed carbon-carbon bond forming reaction to date. Its success originates from a combination of exceptionally mild and functional group tolerant reaction conditions, with a relatively stable, readily prepared and generally environmentally benign organoboron reagent. A variety of such reagents have been d...
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ژورنال
عنوان ژورنال: Chem
سال: 2019
ISSN: 2451-9294
DOI: 10.1016/j.chempr.2019.07.018