Propargylamine → HCID 19003106、化合物

反応式

[OH:1][C:2]1[CH:10]=[CH:9][C:8]2[N:7]([CH3:11])[C:6]3[C:12](=O)[CH2:13][CH2:14][C:5]=3[C:4]=2[CH:3]=1.[CH2:16]([NH2:19])[C:17]#[CH:18]>C(#N)C.CC(C)[O-].[Ti+4].CC(C)[O-].CC(C)[O-].CC(C)[O-]>[CH3:11][N:7]1[C:8]2[CH:9]=[CH:10][C:2]([OH:1])=[CH:3][C:4]=2[C:5]2[CH2:14][CH2:13][C:12](=[N:19][CH2:16][C:17]#[CH:18])[C:6]1=2

参加物

実験手順

To a stirred suspension of 7-hydroxy-4-methyl-1,4-dihydrocyclopent[b]indol-3(2H)-one (5.5 g) in acetonitrile (100 ml) was added propargyl amine (3.0 g), the solution was stirred at room temperature under a nitrogen atmosphere while titanium (IV) isopropoxide (15.6 g) was added in a dropwise manner. The mixture was stirred for 16 hours before quenching with ice water. The mixture was filtered, the solids were washed with CH2Cl2, the layers were separated and the organic portion was dried (Na2SO4). After concentration, the crude product was purified via flash chromatography eluting with hexane/acetone (2:1) to give 4-methyl-3-(2-propynyl)imino-1,2,3,4-tetrahydrocyclopent[b]indol-7-ol.