Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 31608-22-7, Name is 2-(4-Bromobutoxy)tetrahydro-2H-pyran, 31608-22-7.
Study of the diastereoselectivity of cobalt-mediated [2+2+2] cycloadditions of substituted linear enediyne esters
The preparation of substituted linear enediyne esters bearing the double bond either at the terminal or at internal position and the ester substituent either at the alkyne or at the alkene terminus is presented. Their cobalt(I)-mediated [2+2+2] cyclizations produce the eta4-complexed tricyclic compounds in very good yields. The endo/exo selectivity depends on the position of the ester in the enediyne, but the cyclization can be totally diastereoselective. The asymmetric induction in the cyclization of enediynes bearing chiral esters has been studied; however, the diastereomeric excesses are low.
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Reference£º
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics