245469-20-9Relevant articles and documents
Pictet-Spengler condensation of N-sulfonyl-β-phenethylamines with α- chloro-α-phenylselenoesters. New synthesis of 1,2,3,4- tetrahydroisoquinoline-1-carboxylates
Silveira, Claudio C.,Bernardi, Carmem R.,Braga, Antonio L.,Kaufman, Teodoro S.
, p. 4969 - 4972 (2007/10/03)
The reaction of N-sulfonyl-β-phenethylamines with α-chloro-a- phenylseleno acetate/propionate esters under Lewis acid promotion gives moderate to good yields of the corresponding 1,2,3, 4- tetrahydroisoquinoline-1-carboxylates. Varying degrees of diastereoselection were obtained using chiral sulfonamides and/or esters. Employing this strategy, the achievement of a new total synthesis of Calycotomine is reported.
