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Highly regioselective thioformylation of terminal acetylenes with thiols and carbon monoxide has been developed by the use of rhodium(I) complexes as the catalyst: formyl and thio groups are introduced into the terminal and inner positions of acetylenes, respectively. The thioformylation is performed in the presence of a catalytic amount of rhodium(I) complexes, such as RhH(CO)(PPh 3 ) ...
A novel carbonylative addition of thiols (RSH) to terminal acetylenes (R'-C CH) takes place successfully in the presence of platinum catalysts under the pressure of carbon monoxide, providing α,β-unsaturated thioesters (R'-C(C(O)SR) CH 2 ) in good yields regioselectively. This 'hydrothiocarbonylation' reaction of acetylenes may include the formation of the platinum sulfide complex as key...
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