Tetrahedron Letters p. 7687 - 7690 (1997)
Update date:2022-08-11
Topics:
McDonald, Frank E.
Chatterjee, Arnab K.
The molybdenum-promoted cycloisomerization of terminal alkynes tethered to nitrogen nucleophiles is described. Reaction of N-carbamoyl alkynylamines with (Et3N)Mo(CO)5 affords cyclic enecarbamates. Similarly, cyclization of 2-ethynylaniline gives the isomeric indole heterocycle, although N-3- butynylaniline affords the cyclic metal azacarbene product.
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