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PCC
NaBH4 or LiAlH4
1) DIBAH; 2) H3O+
excess LiALH4
Na2Cr2O7, H2SO4(aq)
excess LiALH4
Na2Cr2O7, H2SO4(aq)
excess LiAlH4
excess LiAlH4
PCC or Na2Cr2O7, H2SO4(aq)
NaBH4 or LiAlH4
1) NaOH(aq); 2) H3O+
R’OH, H+
H3O+
H3O+