反应 #3177586
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US05712281
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: In an alternate method, when n is the bridging group --CH2 --, the 8-phenylmethylene-1,4-dioxaspiro[4.5]decane is treated with acetic acid and water as previously described, yielding the corresponding 4-phenylmethylenecyclohexanone. The cyclohexanone is then reduced with hydrogen gas in the presence of 10% palladium on charcoal (Degussa type), yielding the corresponding 4-phenylmethylcyclohexanol, which is in turn treated with sodium dichromate and sulfudc acid in water, affording the 4-phenylmethylcyclohexanone. The 4-phenylmethylcyclohexanone is then reacted with cyanoguanidine, as previously described, yielding the targeted 2,4-diamino-6-phenylmethyl-5,6,7,8-tetrahydroquinazoline. Example 3 provides a detailed description of how this reaction is conducted.
来源 ID: ord-7df3467e8bc04ec098f8f0ad6e5b6d14