Tetrahedron Letters p. 7421 - 7424 (1997)
Update date:2022-08-04
Topics:
De Lera, Angel R.
Torrado, Alicia
Rey, Jose Garcia
Lopez, Susana
Electrocyclic ring closure of (2Z)-divinylallenals 8 (including the retroretinal derivative 8a), afforded the corresponding alkylidene-2H-pyrans, under very mild conditions (25°C, 48 h). Initially, an equilibrium between 8a and the kinetic product E-9a wa
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