Huagongshe화공사 화학 정보 인쇄 보고서 · 연구 참고용
Diisopropylethylamine → 3-Cyclohexyl-5-ethoxy-1,3-dihydro-1-[2-methoxy-4-[N-(2-dimethylamino-1,1-dimethylethyl)carbamoyl]benzyl]-2H-benzimidazol-2-one
참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|---|---|---|
| 반응물 | Diisopropylethylamine | HCID 81531 | — |
| 반응물 | Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphate | HCID 151348 | — |
| 반응물 | (2-Amino-2-methylpropyl)dimethylamine | HCID 226843 | — |
| 반응물 | 1-[4-(N-tert-Butylcarbamoyl)-2-methoxybenzyl]-3-cyclohexyl-5-ethoxy-1,3-dihydro-2H-benzimidazol-2-one | HCID 22922491 | — |
| 용매 | Dichloromethane | HCID 6344 | — |
| 생성물 | 3-Cyclohexyl-5-ethoxy-1,3-dihydro-1-[2-methoxy-4-[N-(2-dimethylamino-1,1-dimethylethyl)carbamoyl]benzyl]-2H-benzimidazol-2-one | HCID 22922565 | 9.2% |
반응 단계
A mixture of 1.5 g of the compound obtained in Example 15 Step B, 1 g of 2-dimethylamino-1,1-dimethylethylamine (synthesized according to J. Am. Chem. Soc., 1946, 68, 12-14), 1.6 g of BOP and 2 g of DIPEA in 20 ml of DCM is left stirring for 1 hour at RT. The reaction mixture is concentrated under vacuum, the residue is extracted with EtOAc, the organic phase is washed with 1N NaOH solution, with water and dried over Na2SO4, and the solvent is evaporated off under vacuum. The residue is chromatographed on silica, eluting with a DCM/MeOH mixture (98/2; v/v). 0.15 g of the expected product is obtained after crystallization from iso ether, mp=161° C.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 특허 번호 | US05661169 |
| 출처 데이터셋 | uspto-grants-1997_08 |
| ORD ID | ord-34fee72ea51d494195a7bcb32bf1ea19 |
| 출처 메모 | uspto-grants-1997_08 |