Selective Halogen Migration Reactions at Mixed Halothiophenes

Experimental and results

Migration at 2-Bromo-3-chlorothiophene

Reaction sequence

Electrophile	E	Yield (%)
MeOH	H	57 (97%)
TMSCl	TMS	79
DMF	CHO	75
Cyclohexanone	1-OH-cyclohexyl	63
CH₃I	CH₃	69
CH₃SSCH₃	CH₃S	62
BrCN	Br	54
PhCHO	PhCHOH	85

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