67280-28-8Relevant articles and documents
ACID-CATALYZED DOUBLE-CYCLIZATION REACTIONS OF N,N-DIBENZYLAMINO-ACETALDEHYDE DIALKYL ACETALS AND RELATED COMPOUNDS: GENERAL SYNTHESIS OF 7,12-DIHYDRO-5H-6,12-METHANODIBENZAZOCINES AND RELATED COMPOUNDS
Suzuki, Takayoshi,Takamoto, Masayuki,Okamoto, Toshihiko,Takayama, Hiroaki
, p. 1888 - 1900 (2007/10/02)
A number of N,N-dibenzylaminoacetaldehyde dialkyl acetals (1) double-cyclized in 70percent perchloric acid or triflic acid (trifluoromethanesulfonic acid) to give good yields of 7,12-dihydro-5H-6,12-methanodibenzazocines (2) even when a powerful elec