中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-(3',4'-dimethoxyphenyl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline | 15547-55-4 | C19H23NO4 | 329.396 |
—— | 2-methyl-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline | 16620-96-5 | C12H17NO2 | 207.272 |
6,7-二甲氧基-1,2,3,4-四氢异喹啉 | 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline | 1745-07-9 | C11H15NO2 | 193.246 |
,7-二甲氧基-1,2,3,4-四羟基异喹啉-1-硫酮 | 6,7-dimethoxy-3,4-dihydroisoquinoline-1(2H)-thione | 24456-59-5 | C11H13NO2S | 223.296 |
—— | 1-(3,4-dimethoxy-phenyl)-6,7-dimethoxy-3,4-dihydro-isoquinoline | 15547-57-6 | C19H21NO4 | 327.38 |
—— | N-[2-(3,4-dimethoxyphenyl)ethyl]-3,4-dimethoxy-N-methylbenzamide | 1276439-90-7 | C20H25NO5 | 359.422 |
Melt pyrolysis of the cis-6,7-dimethoxy-2-methyl-1-phenyl-1,2,3,4- tetrahydroisoquinoline N-oxide (2b) afforded the Meisenheimer rearrangement product, 7,8-dimethoxy-3-methyl-1-phenyl-1,3,4,5- tetrahydro-2,3-benzoxazepine (5b), in good yield, as did pyrolysis of the corresponding trans-N-oxide (3b) (in a melt) or a mixture of (2b) and (3b) (melt or in solution). The synthesis of the 1-deuterated analogue, (5c), of (5b) is described, together with products derived from (5b) by cleavage of the N-O bond which were used to confirm its structure. Meisenheimer rearrangement of the N-oxides (10) and (11) of 6,7-dimethoxy-1-(3,4-dimethoxyphenyl)-2-methyl-1,2,3,4-tetrahydroisoquinoline and 2-methyl-1-phenyl-1,2,3,4- tetrahydroisoquinoline gave the analogous 2,3-benzoxazepine derivatives (12) and (13), respectively.