化学位移规律:炔烃 8c=65-90 H3C-cH2C≡CHH3C—c≡c—cH3 84.767.0 73.6 H3C-CH2-CH2-CH2--C=CH 12.9212299174828 67,4 Hc≡c—OcH2cH2H3C-c≡C—0cH3 23.9894 28.088,4 2021/2/202021/2/20 化学位移规律：炔烃 C=65-90 H3C CH2 C CH 84.7 67.0 H3C C C CH3 73.6 CH2 CH2 C CH 82.8 67.4 H3C CH2 12.9 21.2 29.9 17.4 HC C OCH2CH3 C C OCH3 23.9 89.4 H3C 28.0 88.4