Asymmetric synthesis of (S)-(−)-methyl tropinate: application of the iron acyl complex (S)-(+)-[(η5-C5H5)Fe(CO)(PPh3)COCH2Ph] as a homochiral phenylacetate enolate equivalent.
作者:Teresa M Baker、Graham J Bodwell、Stephen G Davies、Alison J Edwards、Michael R Metzler
DOI:10.1016/s0040-4020(01)87273-2
日期:1993.1
from homochiral (S)-[(η5-C5H5)Fe(CO)(PPh3)COCH35 with benzyne afforded the homochiral phenylacetyl complex (S)-[(η5-C5H5)Fe(CO)(PPh3)COCH2Ph] 4. Treatment of the lithium enolate derived from 4 with ClCH2OCH2Ph furnished the homochiral α-substituted complex (S,S)-(−)-[(η5-C5H5)-Fe(CO)(PPh3)COCH(CH2OCH2Ph)Ph] 14 (d.e. > 98%), which on decomplexation and debenzylation afforded (S)-(−)-methyl tropinate
Synthesis of 3-(2-hydroxy-1-phenylethyl)- and 3-(2-hydroxy-2-phenylethyl)adenine, DNA adducts derived from styrene
作者:Jan Krouželka、Igor Linhart、Tomáš Tobrman
DOI:10.1002/jhet.5570450325
日期:2008.5
3-(2-Hydroxy-2-phenylethyl)- and 3-(2-hydroxy-1-phenylethyl)adenine, DNA adducts derivedfrom styrene, along with their 9-substituted analogues were prepared by alkylation of 8-bromoadenine with corresponding allyl-protected bromohydrins followed by a new deallylation procedure using tetrakis(triphenylphosphine)palladium catalyzed reductive cleavage by poly(methylhydrosiloxane) in the presence of p-toluenesulphonic