Vinyl dihydropyrans and dihydrooxazines: cyclizations of catalytic ruthenium carbenes derived from alkynals and alkynones
F Cambeiro, S López, JA Varela, C Saá - Angewandte Chemie, 2014 - Wiley Online Library
A novel synthesis of 2‐vinyldihydropyrans and dihydro‐1, 4‐oxazines (morpholine
derivatives) from alkynals and alkynones has been developed. The cyclizations require a
mild generation of catalytic ruthenium carbenes from terminal alkynes and (trimethylsilyl)
diazomethane followed by trapping with carbonyl nucleophiles. Mechanistic aspects of the
new cyclizations are discussed.
derivatives) from alkynals and alkynones has been developed. The cyclizations require a
mild generation of catalytic ruthenium carbenes from terminal alkynes and (trimethylsilyl)
diazomethane followed by trapping with carbonyl nucleophiles. Mechanistic aspects of the
new cyclizations are discussed.
[引用][C] Vinyl Dihydropyrans and Dihydrooxazines: Cyclizations of Catalytic Ruthenium Carbenes Derived from Alkynals and Alkynones
F Cambeiro Cambeiro, S López Estévez… - 2014 - Wiley
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