Rapid addition of alcohols to 1,2,3-diazaphosphole 1 easily gave tricoordinated phosphorus compounds,which were sulfurized to tetracoordinated phosphorus compounds. When ethylene glycol and aminoethanol were used sepa...Rapid addition of alcohols to 1,2,3-diazaphosphole 1 easily gave tricoordinated phosphorus compounds,which were sulfurized to tetracoordinated phosphorus compounds. When ethylene glycol and aminoethanol were used separately to react with 1,the tricoordinated phosphorus compounds which formed,rearranged to pentacoordinated phosphorus compounds and the substituents at N_2 affected the rearrangement significantly.展开更多
2-Acetyl-5-methyl-2H-1,2,3—diaraphosphole 1 reacted with 2—butyne—1, 4—diol to form a tricoordinated phosphorus compound 7, which then rearranged to a novel 2, 3-disubstituted-1, 3-diene.Similar rearrangement has ...2-Acetyl-5-methyl-2H-1,2,3—diaraphosphole 1 reacted with 2—butyne—1, 4—diol to form a tricoordinated phosphorus compound 7, which then rearranged to a novel 2, 3-disubstituted-1, 3-diene.Similar rearrangement has been observed when diphenylchloropbosphine reacted with 2-butyne—1,4-diol展开更多
H-1,2,3-Diazaphospholes 3a3h were prepared from various ketone acylhydrazones and phosphorus trichlo-ride in the presence of triethylamine. Compounds 3 underwent feasible hetero-Diels-Alder reactions with cyclopen-tad...H-1,2,3-Diazaphospholes 3a3h were prepared from various ketone acylhydrazones and phosphorus trichlo-ride in the presence of triethylamine. Compounds 3 underwent feasible hetero-Diels-Alder reactions with cyclopen-tadiene to afford the respective anellated [1,2,3]diazaphospholes 4a4d as well as 4a'4d' in moderate yields. The endo rule in the reaction was observed under kinetic control conditions.展开更多
文摘Rapid addition of alcohols to 1,2,3-diazaphosphole 1 easily gave tricoordinated phosphorus compounds,which were sulfurized to tetracoordinated phosphorus compounds. When ethylene glycol and aminoethanol were used separately to react with 1,the tricoordinated phosphorus compounds which formed,rearranged to pentacoordinated phosphorus compounds and the substituents at N_2 affected the rearrangement significantly.
文摘2-Acetyl-5-methyl-2H-1,2,3—diaraphosphole 1 reacted with 2—butyne—1, 4—diol to form a tricoordinated phosphorus compound 7, which then rearranged to a novel 2, 3-disubstituted-1, 3-diene.Similar rearrangement has been observed when diphenylchloropbosphine reacted with 2-butyne—1,4-diol
基金the National Natural Science Foundation of China (No. 20372015).
文摘H-1,2,3-Diazaphospholes 3a3h were prepared from various ketone acylhydrazones and phosphorus trichlo-ride in the presence of triethylamine. Compounds 3 underwent feasible hetero-Diels-Alder reactions with cyclopen-tadiene to afford the respective anellated [1,2,3]diazaphospholes 4a4d as well as 4a'4d' in moderate yields. The endo rule in the reaction was observed under kinetic control conditions.
