Rhenium-Catalyzed Regioselective ortho-Alkenylation and [3 + 2 + 1] Cycloaddition of Phenols with Internal Alkynes.
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DOI: 10.1021/acs.orglett.9b01214
Abstract: An operationally simple and direct rhenium-catalyzed ortho-alkenylation ( C-alkenylation) of unprotected phenols with alkynes was developed. The protocol provided ortho-alkenylphenols exclusively, and formation of para- or multiply alkenylated phenols and hydrophenoxylation ( O-alkenylation) products were… read more here.
Keywords: ortho alkenylation; cycloaddition phenols; rhenium catalyzed; catalyzed regioselective ... See more keywords
Rhenium-Catalyzed Cyclization via 1,2-Iodine and 1,5-Hydrogen Migration for the Synthesis of 2-Iodo-1H-indenes.
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DOI: 10.1021/acs.orglett.9b02380
Abstract: A rhenium complex catalyzed the formation of 2-iodo-1H-indene derivatives through iodine and hydrogen migration of 3-iodopropargyl ethers. The reaction proceeded via generation of 1-iodoalkenylrhenium carbene species by sequential 1,2-iodine and 1,5-hydrogen shifts with readily available… read more here.
Keywords: hydrogen; hydrogen migration; rhenium catalyzed; iodo ... See more keywords