1,5-Dibromopentane → HCID 19813041, compound

Reaction equation

[O:1]1[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[CH2:5][NH:4][C:3](=[O:12])[CH2:2]1.[Br:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18]Br.[H-].[Na+]>CN(C=O)C>[Br:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][N:4]1[CH2:5][C:6]2[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=2[O:1][CH2:2][C:3]1=[O:12]

Participants

Procedure

In 20 ml of DMF was dissolved 100 mg of 2,3,4,5-tetrahydro-1,4-benzoxazepin-3-one and the solution then ice-cooled. Then, to the resulting solution were added 0.125 ml (1.5 equivalent) of 1,5-dibromopentane and 29.4 mg (1.2 equivalent) of a 60% sodium hydride oil dispersion and the mixture was stirred for 1.5 hour with ice-cooling. Thereafter, the reaction solution was reacted and/or treated and purified in the same manner as in Reference Example 1 to give 133 mg (yield: 69.5%) of the title compound.