71581-93-6Relevant articles and documents
Chemo- and diastereoselective reduction of β-enamino esters: A convenient synthesis of both cis- and trans-γ-amino alcohols and β-amino esters
Bartoli,Cimarelli,Marcantoni,Palmieri,Petrini
, p. 5328 - 5335 (2007/10/02)
Convenient procedures for the chemo- and diastereoselective reduction of b-enamino esters 1 are described. Both cis- and trans-γ-amino alcohols 2 or b-amino esters 3 can be prepared by reduction of b-enamino esters 1, readily available starting materials, with the use of inexpensive reagents Na/i-PrOH or NaHB(OAc)3/AcOH, respectively, and the appropriate reduction conditions. The mechanisms and diastereoselectivities for the reductions are discussed. The relative configurations and conformations of the diastereoisomeric γ-amino alcohols 2 and β-amino esters 3 obtained are established by 1H and 13C NMR study and unequivocally set by their cyclic derivatives tetrahydro-1,3-oxazines 4.
Preparations and Crystal Structures of the 2-Oxides of Some Octahydro-3,2,1-benzoxathiazines and Octahydro-2H-3,1,2-benzoxazaphosphorines
Goodridge, Richard J.,Hambley, Trevor W.,Ridley, Damon D.
, p. 591 - 604 (2007/10/02)
The cis- and trans-fused 1-benzyl-1,4,4a,5,6,7,8,8a-octahydro-3,2,1-benzoxathiazine 2-oxides and cis- and trans-fused 1-benzyl-2-phenyl-1,4,4a,5,6,7,8,8a-octahydro-2H-3,1,2-benzoxazaphosphorine 2-oxides have been prepared from the cis- and trans-2-benzylaminocyclohexanemethanols and their structures have been determined by n.m.r. and crystallographic methods.
STEREOCHEMICAL STUDIES XXXVIII SATURATED HETEROCYCLES, XIV; SYNTHESIS AND CONFORMATIONAL ANALYSIS OF STEREOISOMERIC CIS- AND TRANS-TETRAMETHYLENETETRAHYDRO-N-METHYL- AND -N-BENZYL-1,3-OXAZINES
Gera, L.,Bernath, G.,Sohar, P.
, p. 293 - 302 (2007/10/02)
Cis and trans-2-methylaminomethyl- and -benzylaminomethyl-1-cyclohexanol (1-4), as well as cis- and trans-2-hydroxymethyl-1-methylamino- and -benzylamino-cyclohexane (5-8) were allowed to react with p-nitrobenzaldehyde to yield 2-p-nitrophenyl-3-methyl- a