THF gives the corresponding amines in 70–76% yields. Reduction of nitriles yields the corresponding amines in 70–75% yields. The I2/NaBH4 system is useful in the hydrocarboration of olefins and the corresponding alcohols are obtained in 78–92% yields after H2O2/OH− oxidation. The reagent system is also useful for the reduction of carboxylicesters and acids to the corresponding alcohols in 60–90% yields
The synthesis of 3,5-di- and 3,5,5-trisubstituted-1,3-oxazolidines from primary amines and carbonyl compounds
作者:Alan R. Katritzky、Daming Feng、Ming Qi
DOI:10.1016/s0040-4039(98)01487-7
日期:1998.9
A variety of 3,5-substituted 1,3-oxazolidines are synthesized from primaryamines by a novel, two step sequence.
通过新颖的两步序列,由伯胺合成了各种3,5-取代的1,3-恶唑烷。
The use of the β-amino-alcohol-n-oxide derivatives in the synthesis of 2,3 or 4-alkyl substituted nh pyrrolidines
作者:Georges Roussi、Jidong Zhang
DOI:10.1016/s0040-4020(01)87128-3
日期:1991.1
Nonstabilizedazomethineylidesgeneratedfrom the various β-amino alcohols N-oxides 13, 17, 23 and 24 undergo [3+2] cycloaddition reactions with unactivated alkenes to afford the corresponding pyrrolidines 14a-g, 18a-g, 25 and 27 in moderate to good yields. These compounds are precursors of NH pyrrolidines substituted in position 2, 3 or 4.
Convenient Synthetic Methods to C2 Symmetric 3,4-Diphenylpyrrolidines
作者:Vutukuri Dharma Rao、Mariappan Periasamy
DOI:10.1055/s-2000-6404
日期:——
Convenient methods of synthesis of racemic and optically pure 3,4-diphenylpyrrolidine derivatives, involving oxidative coupling of ethyl phenylacetate using TiCl4/Et3N and reduction of dl-2,3-diphenylsuccinic acid or the corresponding cyclic imide with NaBH4/I2 reagent in crucial steps, are described.
Design and synthesis of novel chiral pyrrolidine-based diamines with C2-symmetry
作者:Makoto Nakajima、Kiyoshi Tomioka、Kenji Koga
DOI:10.1016/s0040-4020(01)80176-9
日期:1993.1
Novel chiral pyrrolidine-based diamines with C2-symmetry 2, 3 and their related compounds 4 - 8 were designed and synthesized in optically pure forms. Both (+)- and (-)-2 were prepared from optical active ditosylate 9. 3 was prepared from 3,5-dimethylbenzaldehyde through optical resolution and its absolute stereochemistry was correlated with 2,3-dimethylsuccinate 27. 4 was prepared from (-)-diol 28. 5 - 8 were prepared from 9 and 11.