Rh(III)-catalyzed hydrative cyclization of 1,6-allenynes: synthesis of six-membered nitrogen and oxygen heterocycles
2015
Quan, Shasha | Wang, Yuanyuan | Zheng, Kewen | Tong, Xiaofeng
Hydrative cyclization of 1,6-allenyne catalyzed by simple RhCl3 in aqueous solvent is described. This reaction proceeds in rarely reported fashion of 6-endo cyclization and provides a facile access to 5,6-dihydropyrans and 3,4-dehydropiperidines from acyclic substrates in moderate to good yields.
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