3-(3-Thienyl)propanal 、
1-亚甲基茚满 在
disodium hydrogenphosphate 、 tris(1,10-phenanthroline)iron(III) tris(hexafluorophosphate) 、 (2R,5R)-2-tert-butyl-3,5-dimethylimidazolidin-4-one trifluoroacetic acid salt 作用下,
以
四氢呋喃 为溶剂,
反应 12.0h,
生成
(1'R,5S)-2',3',5,6-tetrahydro-4H-spiro[benzo[b]thiophene-7,1'-indene]-5-carbaldehyde 、 (1'S,5R)-2',3',5,6-tetrahydro-4H-spiro[benzo[b]thiophene-7,1'-indene]-5-carbaldehyde 、
(1'S,5S)-2',3',5,6-tetrahydro-4H-spiro[benzo[b]thiophene-7,1'-indene]-5-carbaldehyde