中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3-(叔丁氧羰基氨基)丁酸甲酯 | methyl 3-((tert-butoxycarbonyl)amino)butanoate | 163254-35-1 | C10H19NO4 | 217.265 |
Boc-L-beta-高丙氨酸 | (S)-3-tert-butoxycarbonylaminobutyric acid | 158851-30-0 | C9H17NO4 | 203.238 |
—— | (S)-tert-butyl (4-hydroxybutan-2-yl)carbamate | 106539-36-0 | C9H19NO3 | 189.255 |
—— | (2S,3S)-3-tert-butoxycarbonylamino-1,2-butanediol | 154079-54-6 | C9H19NO4 | 205.254 |
3-N-boc-(s)-氨基丁腈 | (S)-tert-butyl (1-cyanopropan-2-yl)carbamate | 172695-22-6 | C9H16N2O2 | 184.238 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
Boc-L-beta-高丙氨酸 | (S)-3-tert-butoxycarbonylaminobutyric acid | 158851-30-0 | C9H17NO4 | 203.238 |
—— | Boc-[(S,S)-β2,3-hAla]-CO2Me | 113806-44-3 | C11H21NO4 | 231.292 |
—— | Boc-[(2R,3S)-β2,3-hAla]-CO2Me | 186494-08-6 | C11H21NO4 | 231.292 |
—— | tert-butyl N-[(1S)-1-methyl-3-oxopropyl]carbamate | 118173-26-5 | C9H17NO3 | 187.239 |
—— | (S)-tert-butyl (4-hydroxybutan-2-yl)carbamate | 106539-36-0 | C9H19NO3 | 189.255 |
—— | methyl (2S,3S)-3-[(tert-butoxycarbonyl)amino]-2-fluorobutanoate | 1352133-57-3 | C10H18FNO4 | 235.256 |
—— | (S)-3-tert-butoxycarbonylamino-2,2-dimethyl-butyric acid methyl ester | 499242-68-1 | C12H23NO4 | 245.319 |
—— | tert-butyl (1S)-1-methyl-4-diazo-3-oxobutylcarbamate | 207924-86-5 | C10H17N3O3 | 227.263 |
Trifluoroacetic acid (TFA) was found to promote intramolecular formal N-H insertion reactions. Upon treatment with TFA, optically pure N-Boc-β'-amino-α-diazoketones (5a-c) and N-Boc-γ'-amino-α-diazoketones (10a-d) can be converted, with retention of chirality, into pyrrolidinones (11a-c) and piperidinones (12a-d), respectively, with concomitant removal of the Boc group, in good to excellent yields.Key words: α-diazoketone, amino acid, pyrrolidinone, piperidinone, N-H insertion.