中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-甲基-氮杂环十三烷 | 2-methylazacyclotridecane | 80053-62-9 | C13H27N | 197.364 |
—— | 3-(azacyclotridecan-1-yl)propan-1-amine | 397263-15-9 | C15H32N2 | 240.432 |
—— | 3-(azacyclotridecan-1-yl)propanenitrile | —— | C15H28N2 | 236.401 |
—— | motuporamine A | 211566-77-7 | C18H39N3 | 297.528 |
Rhodium-catalysed reactions of N-benzyl- or N-alkyl-aminoalkenes (6) with H2/CO can give cyclic amines (7) (7–13 ring size) in good to excellent yields when BIPHEPHOS is used as a ligand. Hydrogenation of the aminoalkene becomes a competing reaction for the smaller rings but can be overcome by using a H2/CO gas ratio of 1 : 5. Reactions of 2-alkenyloxybenzylamines (13) gave 9-, 12- and 17-membered rings (14) in 30–40% yield, but dimer formation (16) and/or hydrogenation were competing reactions. Similar reactions of alkenylamides and ortho-alkenylanilines gave only non-cyclized amino aldehydes as products in low isolated yields.