9.When there is a choice in numbering though double bonds receive lower 三 numbers than do triple bonds 765432 HC-CCH, CH,CH,CH=CH 2 1-Hepten-6-yne 1-庚烯-6炔 CH hC-CCH, CHCH, CH,CH-CHCH 4-Methyl-7-nonen-1-yne 4-甲基7-壬烯-1-炔
Organic Chemistry Organic Chemistry Xiamen Xiamen University University When there is a choice in numbering, though, double bonds receive lower numbers than do triple bonds. HC CCH 2CH 2CH 2CH CH 2 1-H epten-6-yne 1-庚烯-6 - 炔 7 6 5 4 3 2 1 H C CCH 2CHCH 2CH 2CH CHCH 3 CH 3 4-Methy l-7-n o nen - 1 - y n e 4-甲基-7-壬烯-1 - 炔
当■ As was the case with hydrocarbon substituents derived from alkanes and alkenes, alkynyl groups are also possible CH3CH2 CH2CH2 CH3 CH2CH=CH Butyl -Butenyl CH3CH2C≡C 1-ButynyI
Organic Chemistry Organic Chemistry Xiamen Xiamen University University As was the case with hydrocarbon substituents derived from alkanes and alkenes, alkynyl groups are also possible: CH 3CH 2CH 2CH 2 CH 3CH 2CH CH CH 3CH 2C C Bu t y l 1- B u t eny l 1- B u t yny l
CH CH C=C-C≡CH CH3 3,4二甲基3-戊烯1-炔 CH3(CH2)5C≡CH 1-十八碳炔
Organic Chemistry Organic Chemistry Xiamen Xiamen University University C C CH 3 CH 3 CH 3 C C H 3,4-二甲基 -3 -戊烯 - 1 - 炔 CH 3(C H 2 )15C C H 1 -十八碳炔
6.1.3炔烃的物理性质 gmp,bp,d一般比同碳原子数的烷烃和烯 当烃高。 分子短小细长 分子间距小 范德华作用力强
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 6.1.3 炔烃的物理性质 mp, bp, d 一般比同碳原子数的烷烃和烯 烃高 范德华作用力强 范德华作用力强 分子短小细长 分子间距小
6.2炔烃的化学性质 Chemical Properties of Alkynes
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 6.2 炔烃的化学性质 Chemical Properties of Alkynes