中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1,2,3,4-Tetrahydrophosphinolin-1-oxid | 52221-85-9 | C9H11OP | 166.159 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-Methoxy-1,2,3,4-tetrahydrophosphinolin-1-oxid | 52221-86-0 | C10H13O2P | 196.186 |
—— | 1-ethyloxy-1,2,3,4-tetrahydro-1-phosphinoline-1-oxide | 52221-87-1 | C11H15O2P | 210.213 |
—— | 1-ethyl-1,2,3,4-tetrahydro-phosphinoline 1-oxide | 52293-08-0 | C11H15OP | 194.213 |
—— | 1-vinyl-1,2,3,4-tetrahydro-phosphinoline 1-oxide | 52427-70-0 | C11H13OP | 192.197 |
—— | 1-chloro-1,2,3,4-tetrahydro-phosphinoline 1-oxide | 52427-92-6 | C9H10ClOP | 200.605 |
—— | 1-(2-N,N-Dimethylamino)-ethyl-1-oxo-1,2,3,4-tetrahydrophosphinolin | 52427-71-1 | C13H20NOP | 237.282 |
—— | 1-oxo-1,2-dihydro-1λ5-phosphinolin-1-ol | 52427-76-6 | C9H9O2P | 180.143 |
—— | l'oxyde de 1-phenyl-1,2,3,4-tetrahydrophosphinoline | 52221-89-3 | C15H15OP | 242.257 |
1-Hydroxy-1,2,3,4-tetrahydrophosphinoline 1-oxide (2a) was converted via the corresponding acid chloride (2b) into the 1-vinylphosphine oxide (3) which underwent a Michael-like addition with dimethylamine to give 1-(2'-dimethylaminoethyl)-1,2,3,4-tetrahydrophosphinoline 1-oxide (6). The successive reduction of (6) with trichlorosilane, and oxidation with sulphur afforded the phosphine sulphide (7). The reaction of 1-vinyl-1,2,3,4-tetrahydrophosphinoline 1-oxide (3) with N-bromosuccinimide followed by treatment with dimethylformamide gave 1-vinyl-1,2-dihydrophosphinoline 1-oxide which, under mild conditions, underwent Michael-like addition of amines to the vinyl group to give, for example, 1-(2'-propylaminoethy1)-1,2-dihydrophosphinoline 1-oxide. When heated in a sealed tube at 140-150° in water for 60 h this amine was converted into 4-propyl-1,2,3,4,5,6-hexa- hydro-1,5-methano-4,1-benzazaphosphocine 1-oxide. Several related tricyclic compounds including the corresponding phosphines and phosphine sulphides were synthesized. Several of the new aminophosphorus compounds were tested for analgesic activity.
A new synthesis of the 1,2,3,4-tetrahydrophosphinoline ring is described. Reaction of 3-phenyl- propylphosphonous dichloride with zinc chloride at 170� followed by hydrolysis with hot concentrated hydrochloric acid, then oxidation with bromine, gave 91% of 1-hydroxy-1,2,3,4-tetrahydrophosphinoline 1-oxide (20b). Under conditions where oxidation was incomplete, 1,2,3,4-tetrahydrophosphinoline 1-oxide was isolated. On a small scale the reaction of 3-phenylpropylphosphonous dichloride with a catalytic amount of aluminium chloride at 220� gave 60% of l-chloro- 1,2,3,4-tetrahydrophosphinoline (18). Treatment of (20b) with thionyl chloride gave 1-chloro-1,2,3,4-tetrahydrophosphinoline 1-oxide which, upon reaction with the appropriate Grignard reagent, afforded 1-ethyl or 1-phenyl-1,2,3,4- tetrahydrophosphinoline 1-oxide. 1-Ethyl-1,2,3,4-tetrahydrophosphinoline 1-oxide was reduced with trichlorosilane to the phosphine, which upon reaction with sulphur yielded the corresponding phosphine sulphide. The methyl and ethyl esters of (20b) are described.