Реакция #10652

Уравнение реакции

Intermediate 93

5-bromo-4-methylisoquinoline

Intermediate 93

5-bromo-4-methylisoquinoline

tri(tert-butyl)phosphine

cis-N-(tert-butoxycarbonyl)-1,4-cyclohexanediamine

sodium tert-butoxide

→

title compound

cis-N-(tert-butoxycarbonyl)-N′-(4-methyl-5-isoquinolyl)-1,4-cyclohexanediamine

Растворители

ethyl acetate

toluene

Условия реакции

Обработка

1. 1
   ТемператураThe reaction mixture was cooled to room temperature
2. 2
   Другоеthe insoluble matters were removed by filtration through Celite
3. 3
   ДругоеThe solvent was evaporated under reduced pressure
4. 4
   Другоеthe residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:1)

Методика

According to the method of Example 15, Step A, the title compound was synthesized from Intermediate 93. That is, under nitrogen atmosphere, a suspension of Intermediate 93 (602 mg), tris(dibenzylideneacetone)dipalladium(0) (124 mg), tri(tert-butyl)phosphine (0.5 ml, Kanto Chemicals), cis-N-(tert-butoxycarbonyl)-1,4-cyclohexanediamine (697 mg) and sodium tert-butoxide (390 mg) in toluene was stirred with heating at 120° C. for 16.5 hours. The reaction mixture was cooled to room temperature and added with ethyl acetate (10 ml), and the insoluble matters were removed by filtration through Celite. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:1) to obtain the title compound (45 mg).

Источник