ACETAL, CARBONYL AND ORTHO ESTER CONVERSIONS Acetals

EtsSiH, cat TfOH, cat bis(tiimethylsilyl - acetamide or bis(trimethylsilyl)iirea SL 433 (1993) 

Et3SiH, cat FS03H, cat bis(tiiiDethylsilyl -acetamide or bis(trimetbylsilyl)urea SL 583 (1993) 

Et3SiH, BF3OEt2 Et3SiH, eat n-Bu2Sn(OT02 Et3SiH, SnCl  

H2C=CHCH2M(M = BCQ) SnR3), Lewis acid JACS 108 7116 (1986) (chiral) 

RCH=CRCH2AlMBr H2C=CHCH2SiClj, cat t-Bu2Sn(OTf)2 RCH=CRCHRSiMe3, review (diastereoselective) JOMC 170 1 (1979) JACS 112 901 (1990) (ketals only) Chem Rev 95 1293 (1995) 

Et3SiH, BF3 OEt2 Et3SiH, cat n-Bu2Sn(OT02 Et3SiH, S11CI4 

H2C=CHCH2Br, Al, cat AlBr3, cat PbBr2 RCH=CRCH2Al Br H2C=CHCH2SiCI3, cat n-Bu2Sn(OTf)2 

H2C=CHC(=CH2)CH2SiMe3, TiCU or Me3SiI H2C=C=CHCH2SiMe3, TiCU-Ti(0-t-Pr)4 H2C=CHSiMe2CL SnCU ArSLMe2Cl, SnCU 

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