scholarly journals Borylstannylation of alkynes with inverse regioselectivity: copper-catalyzed three-component coupling using a masked diboron

2015 ◽  
Vol 51 (29) ◽  
pp. 6297-6300 ◽  
Author(s):  
H. Yoshida ◽  
Y. Takemoto ◽  
K. Takaki
Keyword(s):  
Triple Bond ◽  
Copper Catalysis ◽  
Terminal Alkynes ◽  
Straightforward Manner ◽  
Three Component Coupling

Masked boryl and stannyl moieties are smoothly installed into a carbon–carbon triple bond of diverse terminal alkynes under copper catalysis to provide cis-boryl(stannyl)alkenes in a straightforward manner. The regioselectivity is totally inverted to those of the previous borylstannylations, where a masked boryl moiety is attached to an internal carbon of alkynes.

Competitive Copper Catalysis in the Condensation of Primary Nitro Compounds with Terminal Alkynes: Synthesis of Isoxazoles

2016 ◽  
Vol 2016 (27) ◽  
pp. 4643-4655 ◽  
Author(s):  
Ausilia Baglieri ◽  
Luca Meschisi ◽  
Francesco De Sarlo ◽  
Fabrizio Machetti
Keyword(s):  
Nitro Compounds ◽  
Copper Catalysis ◽  
Terminal Alkynes

Controllable assembly of the benzothiazole framework using a CC triple bond as a one-carbon synthon

2018 ◽  
Vol 54 (14) ◽  
pp. 1742-1745 ◽  
Author(s):  
Yubing Huang ◽  
Donghao Yan ◽  
Xu Wang ◽  
Peiqi Zhou ◽  
Wanqing Wu ◽  
...  
Keyword(s):  
Triple Bond ◽  
Elemental Sulfur ◽  
Terminal Alkynes ◽  
One Pot ◽  
Benzothiazole Derivatives

A one-pot protocol to controllably assemble diverse benzothiazole derivatives from o-haloanilines, elemental sulfur and terminal alkynes has been realized.

Metal-free synthesis of alkynyl alkyl selenides via three-component coupling of terminal alkynes, Se, and epoxides

2018 ◽  
Vol 20 (7) ◽  
pp. 1560-1563 ◽  
Author(s):  
Ge Wu ◽  
Lin Min ◽  
Hongchen Li ◽  
Wenxia Gao ◽  
Jinchang Ding ◽  
...  
Keyword(s):  
Formation Process ◽  
Bond Formation ◽  
Coupling Reaction ◽  
Terminal Alkynes ◽  
Metal Free ◽  
Three Component Coupling

A metal-free three-component coupling reaction of alkynes, Se powder and epoxides is described, providing an efficient, straightforward route for the preparation of alkynyl alkyl selenides via a double C–Se bond formation process.

scholarly journals Copper-catalyzed α-selective hydrostannylation of alkynes for the synthesis of branched alkenylstannanes

2015 ◽  
Vol 51 (53) ◽  
pp. 10616-10619 ◽  
Author(s):  
H. Yoshida ◽  
A. Shinke ◽  
Y. Kawano ◽  
K. Takaki
Keyword(s):  
Copper Catalysis ◽  
Terminal Alkynes ◽  
Universal System

A universal system for highly α-selective hydrostannylation of terminal alkynes has been developed by use of a distannane or a silylstannane as a stannylating reagent under copper catalysis.

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