24 research outputs found
Cyclic Phosphonium Salts by Chlorination of Benzo[c]-2-(2-Chloro-1,3-Alkadienyl)-2-Oxo-1,3,2-Dioxaphospholanes
No full text2(2-Chloro-1,3-Alkadiene)-2-Oxo-1,3,2-Dioxaphos-Pholanes and Their Heterocyclization in the Reaction with Electrophilic Reagents
No full textBifunctionalized Allenes. Part XIII. A Convenient and Efficient Method for Regioselective Synthesis of Phosphorylated α-Hydroxyallenes with Protected and Unprotected Hydroxy Group
No full textThe paper describes a convenient and efficient method for regioselective synthesis of phosphorylated α-hydroxyallenes using an atom economical [2,3]-sigmatropic rearrangement of intermediate propargyl phosphites or phosphinites. These can be readily prepared via reaction of protected alkynols with dimethyl chlorophosphite or chlorodiphenyl phosphine respectively in the presence of a base
Trifunctionalized Allenes. Part VI. Synthesis of 2,5-Dihydro-1,2-oxaphospholes, Furan-2(5H)-ones and 5,6-Dihydro-2H-pyrans by Electrophilic Cyclization and Cycloisomerization of 4-Phosphorylated 6-Hydroxyhepta-2,3-dienoates
No full textBifunctionalized allenes. Part XXII. Coinage metal-catalyzed cycloisomerization of phosphorylated 3-(α- or β-hydroxyalkyl)allenes to 2-phosphoryl-2,5-dihydrofurans or 2-phosphoryl-5,6-dihydro-2 H
No full textBifunctionalized Allenes. Part XII. Electrophilic Cyclization and Addition Reactions of 4-Sulfinylated or 4-Sulfonylated Allenecarboxylates
No full text<div><p>GRAPHICAL ABSTRACT</p><p></p></div
Trifunctionalized allenes. Part III. Electrophilic cyclization and cycloisomerization of 4-phosphorylated 5-hydroxypenta-2,3-dienoates: An expedient synthetic method to construct 2,5-dihydro-1,2-oxaphospholes, furan-2(5 H
No full textBifunctionalized allenes. Part XXIV. Competitive electrophilic cyclization of 5-(dimethoxyphosphoryl)-alka-3,4-dienoates leading to 2,5-dihydro-1, 2-oxaphospholes and 5,6-dihydro-2 H
No full text2-CHLORO-1,3-ALKADIENYLPHOSPHONIC AMIDOESTERS AND THEIR 5,6-DIHYDRO-2H-1,2-OXAPHOSPHORINE CYCLIZATION IN REACTION WITH ELECTROPHILIC REAGENTS
No full text
