Chemistry Letters, Vol.35, No.9, 992-993, 2006
Isolation and characterization of an allenylthioketene and 4-methylenecyclobutenethiones generated by thermal reaction of alkynyl propargyl sulfides
Alkynyl propargyl sulfides underwent [3,3] sigmatropic rearrangement followed by ring closure to afford isolable 4-methylenecyclobutenethiones, and an intermediary allenylthioketene 2 was isolated by heating t-butyldimethylsilylethynyl propargyl sulfide.