참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|
| 반응물 | Dicyclohexylcarbodiimide | HCID 10868 | — |
| 반응물 | 3a,4,7,7a-Tetrahydro-2-hydroxy-4,7-methano-1H-isoindole-1,3(2H)-dione | HCID 89529 | — |
| 용매 | Dioxane tetrahydrofuran | HCID 22018518 | — |
| 생성물 | N,N'-Dicyclohexylurea | HCID 4277 | — |
| 생성물 | 3a,4,7,7a-Tetrahydro-2-hydroxy-4,7-methano-1H-isoindole-1,3(2H)-dione | HCID 89529 | — |
반응 단계
The N-hydroxy-5-norbornene-2,3-dicarboximide active ester of N-benzyloxycarbonyl DL-2-hydroxy-4-aminoburyric acid was prepared according to the procedure of M. Fujino, et al [Chem. Pharm. Bull. Japan, 22, 1857 (1974)]. To an ice cold solution of 0.40 g. of N-benzyloxycarbonyl-DL-2-hydroxy-4-aminoburyric acid and 0.32 g. of N-hydroxy-5-norbornene-2,3-dicarboximide in 3 ml. of tetrahydrofuran-dioxane (1:1 v/v), there was added, with stirring, 0.36 g. of N,N'-dicyclohexylcarbodiimide and 1 ml. of the above solvent mixture. The solution was stirred in the cold for 30 minutes and then at room temperature for 2 hours. The N,N'-dicyclohexylurea which formed in the above reaction was collected on a filter and washed with three 1-ml. portions of tetrahydrofuran-dioxane (1:1 v/v).
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 특허 번호 | US04174312 |
|---|
| 출처 데이터셋 | uspto-grants-1979_11 |
|---|
| ORD ID | ord-1667399957d049b8a4424a9c321330be |
|---|
| 출처 메모 | uspto-grants-1979_11 |
|---|
