A number of spiro[cyclopentane (cyclohexane, and cycloheptane)-1,4-perhydro- [1,3,2]diazaphosphole] derivatives (3a–c, 5a–c, 11a–c, and 12a–c) and spiro-[cyclopentane (cyclohexane, and cycloheptane)-1,4-perhydro[1,3,2]oxaazaphos-phole] derivatives (7a–c) were prepared via an interaction of 2,4-bis-(4-methoxy-phenyl)- 1,3,2,4-dithiaphosphetane-2,4-disulphide (1) with substances containing two functional groups. إقراء المزيد

2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide (Lawesson’s Reagent, LR, 1) reacts with cycloalkylidenecyanoth ioacetamides (2 and 3) to give 5-cyano-2-(4-methoxyphenyl)spiro [cyclopentane(cyclohexane)-1,6 -perhydro-[1,3,2]thiazaphosphixane] 2 ,4 -disulfide (4 and 5). The reaction of compounds 4 and 5 with -halo compounds led to the formation of the substituted thio-compounds 6a–e and 7a–e, respectively, these compounds, upon treatment with sodium ethoxide, produce the corresponding thienothiazaphosphixine derivatives 8a–e and 9a–e ... إقراء المزيد

5- The reaction of 2,4-bis(4-meyhoxyphenyl)-1,3,2,4-dithiadidiphosphetane- 2,4-disulphide (Lawesson,s Reagent, LR) with some s-triazole derivatives. Synthesis of s-triazole-fused P-heterocycles. H. M. Moustafa, Phosphorus, Sulfur, Silicon and the related elements, 164, 11 (2000). 6- Synthesis and reactions of new fused heterocycles derived from 3-(o-aminophenyl)-4- amino-5-mercapto-1,2,4-triazole. H. M. Moustafa, Synthetic Comm., 31(1), 97-109 (2001). 7- A Convenient synthesis of polyfunctionally substituted heterocyclic systems derived ... إقراء المزيد