85972-11-8Relevant academic research and scientific papers
Preparation of 2,3-Dihetero-Substituted 1,3-Dienes from Brominated 2-Sulfolenes
Chou, Ta-shue,Lee, Shwu-Jiuan,Peng, Man-Li,Sun, Der-Jen,Chou, Shang-Shing Peter
, p. 3027 - 3031 (2007/10/02)
A general procedure for the preparation of 2,3-dihetero-substituted 1,3-butadienes is described.These dienes are obtained from the thermolysis of the corresponding 3,4-disubstituted 3-sulfolenes, which can be prepared by nucleophilic substitution reaction
Preparation and Diels-Alder Reactivity of Several New Chalcogen-Halogen Substituted Butadienes
Bridges, Alexander J.,Fischer, John W.
, p. 2954 - 2961 (2007/10/02)
Addition of halogens and pseudohalogens across one ?-bond of 1,4-dichlorobut-2-yne, followed by a 1,4-elimination, is an efficient synthesis of several new polysubstituted butadienes.If the product dienes have a sulfur or selenium substituent they are quite reactive, undergoing cycloaddition with the moderately reactive dienophile methyl vinyl ketone at 20 deg C in the presence of boron trifluoride etherate.The regiochemistry of the cycloadditions was elucidated, and the limitations of the methodology are discussed.
A SIMPLE PREPARATION OF SEVERAL NEW 2,3- AND 1,2,3-SUBSTITUTED BUTA-1,3-DIENES FROM 1,4-DICHLOROBUTYNE
Bridges, Alexander J.,Fischer, John W.
, p. 445 - 446 (2007/10/02)
Addition of (pseudo) halogens across the triple bond of 1,4-dichlorobut-2-yne, followed by a 1,4-elimination, provides a very simple preparation of ten novel butadienes.
