反应详情

温度

130 °C

Silane 1a was prepared by first preparing and then hydrosilating 4-(N-methylallylamino)pyridine with diethoxy(methyl)silane, (EtO)2MeSiH. The 4-(N-methylallylamino)pyridine was first obtained by reaction of 4-chloropyridine and N-methylallylamine. Thus, 4-chloropyridine (11.4 g; 0.1 mol) and N-methylallylamine (7.1 g; 0.1 mol) were combined in a glass ampoule or steel container, after which the mixture was degassed under vacuum and the vessel was sealed. The vessel was heated for three days at 130° C. The vessel was thereafter opened and the contents were dissolved in water and then neutralized with 10% aqueous NaOH. The aqueous solution was extracted with several portions of diethyl ether. The ether extract was filtered and evaporated. The residue was distilled under vacuum to give 4-(N-methylallylamino)pyridine (11.1 g; 75%; b.p. 70° C. @ 0.1 torr). 4-(N-Methylallylamino)pyridine (4.45 g; 0.030 mol), MeSiH(OR)2 (6.7 g; 0.050 mol) and H2PtCl6 (60 μL; 0.080 mol/L in i-PrOH; 4.6×10-6 mol) were combined and heated under vacuum in a sealed vessel for 10 hours at 130° C. Distillation of the products gave Silane 1a, N-(3-(diethoxy(methyl)silyl)propyl)-N-methyl-4-aminopyridine, as a colorless liquid (6.3 g; 74%; b.p. 122-127° C. @ 0.05 torr). The product was characterized by elemental analysis, infrared, 1H and 13C--NMR spectroscopy, and gas chromatography-mass spectrometry.

1. customafter which the mixture was degassed under vacuum
2. customthe vessel was sealed
3. dissolutionthe contents were dissolved in water
4. extractionThe aqueous solution was extracted with several portions of diethyl ether
5. extractionThe ether extract
6. filtrationwas filtered
7. customevaporated
8. distillationThe residue was distilled under vacuum