(16)HNO3/H2SO4 KMnO4/H*O2NCOCI O2N>CHO (17)CH CH2NH2 CHgCH2CNHCH2CH3 CHgCH2CH2NHCH2CH3 PhoNCaHz-n PhCH (18) OMgBr OH CH3-C-CsHs CH3-C-CcHs PCls C6H5 C6H5 (19)HOC2H5 LHLOCCHCHCH-CO CH2CH3 OC2H5 CH3CH2CHCOOC2H5 (注：LDA为[(CH2CH2Nti) O-C-CHs 0 (20) ，CHCCHCOOC2H' CH(CHa)2 OC2H5 OC2Hs OC2Hs CHsCcCooC2Hs CHaCCCooNa CHeCCH CH(CH3)2 CH(CHa)2 CH(CH3)2 CH(CHa)2 0 (21)CHaCCH2COOC2H5 CHaCCHCOOC2H5 CH3CCHCOONa O-CCH(CHs)2 O-CCH(CH3)2 0 CH3CCH2CCH(CH3)2 O-CCH(CHa)2 KMnO4/H O2N COCl O2N CHO HNO + 3/H2SO4 (16) CH3CH2CH2NHCH2CH3 O (17) CH3CH2NH2 CH3CH2CNHCH2CH3 PhC O N C3H7 C2H5 n O PhCH (18) CH3 C C6H5 OMgBr C6H5 CH3 C C6H5 OH C6H5 PCl5 CH(CH3)2 CH3CCHCOOC2H5 , O CH3CCH2COOC2H5 O (20) O CH3CCCOOC2H5 CH(CH3)2 C2H5 O CH3CCCOONa CH(CH3)2 C2H5 O CH3CCCOOH CH(CH3)2 C2H5 O CH3CCH CH(CH3)2 C2H5 OC2H5 O - Li + CH3CH2CH=C (
LDA[(CH3)2CH]2NLi O CH3CH2CHCOOC2H5 (19) H C CH3 OC2H5 -
  ❧ ❦  ❧
O C O CH3CCHCOOH CH(CH3)2 CH(CH3)2 CH3CCHCOONa O C O C O (21) CH3CCH2COOC2H5 O O CH3CCHCOOC2H5 CH(CH3)2 C O O CH3CCH2 CH(CH3)2