ChemInform Abstract: STABLE QUASIPHOSPHONIUM SALTS IN REACTIONS OF ALLENYL PHOSPHONATES WITH SULFENYL CHLORIDES

Abstract

Während bei der Reaktion von Allenylphosphonsäureestern mit Sulfenylchloriden Oxaphospholene und das entsprechende Alkylchlorid erhalten werden, läßt sich aus dem Ester (I) in Gegenwart von Antimonpentachlorid (III) das Quasiphosphoniumsalz (‐lV) kristallin isolieren.

Interaction of 1,2-Alkadienephosphonic thioesters with sulphenyl- and selenenylbromide

“…The study of reactivity of these compounds, as well as the creation of methods for their preparation is one of the topics in our investigations for more than 20 years [8][9][10][11][12][13][14].…”

“…Their preparation as well as their reactions attracts permanent interest [1][2][3][4]. An increasing number of reactions involving phosphorylated 1,2-alkadienes as well as concepts of their reactivity are noticed [5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Interaction of 1,2‐alkadienephosphonic dialkyl esters with sulfenyl‐ and selenenylbromides

“…The study of the reactivity of these compounds, as well as the creation of methods for their preparation, is one of the topics in our investigations for more than 20 years [8][9][10][11][12][13][14].…”

Dialkyl 1-Alkynylphosphonates: a Range of Promising Reagents

“…[112] In the reaction of benzenesulfenyl chloride with diethyl 1-propynylphosphonate 18 (R ϭ Et), the two regioisomeric adducts with an E configuration of the phenylthio group and the chlorine atom about the double bond are obtained. [113] Alkyl or aryl chalcogenate (S, Se, Te) anions add to diethyl 1-alkynylphosphonates 13 to give diethyl 2-chalcogenylvinylphosphonates in satisfactory yields (26Ϫ70%). The reaction is stereoselective, giving the Z stereoisomer either predominantly or exclusively.…”