cis-Vinylphosphonates and 1,3-butadienylphosphonates by zirconation of 1-alkynylphosphonates.
[structure in text] Addition of "zirconocene" to 1-alkynylphosphonates gives three-membered zirconacylces that can be hydrolyzed to cis-vinylphosphonates or further reacted with alkynes/hydrolysis to give substituted (Z,E)- and (E,E)-1,3-butadienylphosphonates.
Aziz Quntar
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Department of Medicinal Chemistry and Natural Products, School of Pharmacy, Hebrew University in Jerusalem, Jerusalem 91120, Israel.
Srebnik
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