462-80-6Relevant articles and documents
Arynes and Their Precursors from Arylboronic Acids via Catalytic C-H Silylation
Devaraj, Karthik,Ingner, Fredric J.L.,Sollert, Carina,Gates, Paul J.,Orthaber, Andreas,Pilarski, Lukasz T.
, p. 5863 - 5871 (2019/04/16)
A new, operationally simple approach is presented to access arynes and their fluoride-activated precursors based on Ru-catalyzed C-H silylation of arylboronates. Chromatographic purification may be deferred until after aryne capture, rendering the arylboronates de facto precursors. Access to various new arynes and their derivatives is demonstrated, including, for the first time, those based on a 2,3-carbazolyne and 2,3-fluorenyne core, which pave the way for novel derivatizations of motifs relevant to materials chemistry.
Reactions of an Isolable Dialkylstannylene with Propynoates and Benzyne
Xu, Jian,Xiao, Xu-Qiong,Yan, Chenting,Li, Zhifang,Lu, Qiong,Yang, Qian,Lai, Guoqiao,Kira, Mitsuo
, p. 2399 - 2405 (2018/08/21)
The reactions of stable monomeric dialkylstannylene 1 with methyl and ethyl propynoates give the corresponding 1:2 adducts, alkenyl(alkynyl)stannane 2 and 3 in high yields, while 1 does not react with parent acetylene or common mono- and disubstituted acetylenes such as phenylacetylene, trimethylsilylacetylene, diethyl 2-butynedioate, etc. Notably, 2 and 3 have the Z-configuration of the alkenyl moieties, in contrast to similar adducts obtained by the known reactions of silylenes with terminal acetylenes. It is suggested that the formation of a carbonyl oxygen-coordinate cyclic zwitterion as a key intermediate is essential for the reactions. Stannylene 1 adds to in situ generated benzyne, forming a 1:1 adduct having a unique 3-stanna-1-silaindane ring system.
ROOM TEMPERATURE POLYMER CROSSLINKING USING 1-FUNCTIONALIZED BENZOCYCLOBUTENE
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, (2016/05/02)
Specific benzocyclobutenes serve as intramolecular or intermolecular or both intramolecular or intermolecular crosslinkers. The benzocyclobutenes can be incorporated into polymers post polymerization or can be provided as monomers that participate in homo