ChemInform Abstract: Phosphorylated Allenes in Cycloaddition Reactions.

Abstract

1991 organo-phosphorus compounds, nonmetal heterocycles organo-phosphorus compounds, nonmetal heterocycles S 0087 01 -292 Phosphorylated Allenes in Cycloaddition Reactions. --(KHU-SAINOVA, N. G.; IRTUGANOVA, E. A.; SMIRNOVA, L. V.; IONKIN, A. S.; CHERKASOV, R. A.; PUDOVIK, A. N.; Phosphorus, Sulfur Silicon Relat. Elem. 51-52 (1990) 291; Kazan State Univ., Kazan 420008, USSR; EN)

Quinquevalent phosphorus acids

“…The 2-pyrrolylphosphonic diesters (242) Esters of (3-hydroxy-2-indoly1)phosphonic acid (247: R2 = Me: R1 = Me, allyl, Bn, 154 or 2-furanylmethyl) have been prepared according to Scheme 20. Nitroalkenes are being examined increasingly as valuable reactants in a variety of syntheses: one such use has just been mentioned. The reaction between PhCH=CR(N02) The BF3.Et20-assisted ring-opening of epoxides by phosphites or methylphosphonate carbanions form an excellent procedure for the synthesis of (8-hydroxyalky1)phosphonates (279) or (y-hydroxyalky1)phosphonates (280). 74…”