学術雑誌論文 Catalytic [2+2+1] Synthesis of Fused Thiophenes Using Thiocarbonyls as Sulfur Donors

Matsui, Kazuma  ,  Shibuya, Masatoshi  ,  Yamamoto, Yoshihiko

55 ( 49 )  , pp.15397 - 15400 , 2016-12-05 , Wiley
ISSN:1433-7851
内容記述
The use of N-(p-chlorophenyl)methylbenzoxazole-2-thione as a sulfur-atom donor enables the catalytic [2+2+1] cycloaddition of diynes in wet DMF at 80 °C when open to air, thus affording diverse fused thiophenes with good yields and wide functional-group compatibility. A plausible mechanism, involving a cationic ruthenacycle intermediate, was also proposed on the basis of several control experiments.
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