ChemInform Abstract: Unique Reactivity of a Diphenyldisilane Unit Incorporated Into the Bicyclic Ring System: Generation of a Disilanyllithium via Silicon-Phenyl Bond Cleavage with Lithium.

ChemInform ◽  
2010 ◽  
Vol 33 (32) ◽  
pp. no-no
Author(s):  
H. Tsuji ◽  
A. Toshimitsu ◽  
K. Tamao
Keyword(s):  
Bond Cleavage ◽  
Ring System ◽  
System Generation

Carbon–nitrogen bond cleavage of pyridine with two molecular substituted allenoates: access to 2-arylpyrimidin-4(3H)-one

2018 ◽  
Vol 54 (100) ◽  
pp. 14128-14131 ◽  
Author(s):  
Tao Jin ◽  
Hongdong Yuan ◽  
Shikuan Su ◽  
Xueshun Jia ◽  
Chunju Li ◽  
...  
Keyword(s):  
Benzene Ring ◽  
Ring Opening ◽  
Pyridine Ring ◽  
Bond Cleavage ◽  
Ring System ◽  
Nitrogen Bond

A DABCO-catalyzed annulation reaction of pyridin-2-amine and substituted allenoates enables the ring-opening of a pyridine ring system and the formation of two new rings including a pyrimidinone ring and a benzene ring.

The Stereochemistry of P-N Bond Cleavage in the Staudinger -Wittig-type Reaction of 2-Anilido-3,4-dimethyl-5-phenyl-1,3,2-oxazaphospholidine-2-thiones

1978 ◽  
Vol 33 (7) ◽  
pp. 782-785 ◽  
Author(s):  
Krystyna Lesiak ◽  
Wojciech J. Stec
Keyword(s):  
Bond Cleavage ◽  
Ring System ◽  
Membered Ring ◽  
Type Reaction

AbstractBoth isomers of 2-anilido-3,4-dimethyl-5-phenyl-1,3,2-oxazaphospholidine-2-thiones (2 a and 2 b) derived from (-)ephedrine were obtained and converted to corresponding 2-thiomethyl derivatives (3 a and 3 b). The Staudinger-Wittig-type reaction of P-N bond cleavage was found to proceed with full retention of configuration at P-atom involved into five-membered ring system.

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