PHOSPHONATES CONTAINING SULFUR AND SELENIUM - THE FIRST SYNTHESIS OF ALPHA-PHOSPHORYLVINYL SELENIDES AND SELENOXIDES AND A NEW SYNTHETIC APPROACH TO ALKYNYLPHOSPHONATES
Wh. Midura et M. Mikolajczyk, PHOSPHONATES CONTAINING SULFUR AND SELENIUM - THE FIRST SYNTHESIS OF ALPHA-PHOSPHORYLVINYL SELENIDES AND SELENOXIDES AND A NEW SYNTHETIC APPROACH TO ALKYNYLPHOSPHONATES, Tetrahedron letters, 36(16), 1995, pp. 2871-2874
An efficient, two-step synthesis of alpha-phosphorylvinyl selenides 4
from a-phosphoryl sulfoxides 1 is described which involves selenenylat
ion reaction and subsequent thermal sulfoxide elimination. Oxidation o
f 4 leads to alpha-phosphorylvinyl seienoxides 5 which upon thermoiysi
s afford alkynylphosphonates 6.