A. 丁醛
B. 3- 甲基丁醛
C. 2- 甲基 -1- 丁酸醛
D. 2- 甲基丁醛
以下三种烷烃 CH3CH2CH2CH3①、CH3CH2CH(CH3)2② 和CH3CH2C(CH3)3③甲基面外弯曲振动分别为( )A. ①为1395cm-1
CH3 一-CH b. CH3CHCH 2CHCHCH3-|||-CH2 -CH-CH-CH3 CH3 CH3-|||-CH3 CH3-|||-CH3 CH3
[单选题]CH3(CH2)2CH2+(Ⅰ);CH3CH+CH2CH3(Ⅱ);(CH3)3C+(Ⅲ)三种碳正离子的稳定性顺序如何?()A . (Ⅰ)>(Ⅱ)>(Ⅲ);B . (Ⅰ)<(Ⅱ)<(Ⅲ);C . (Ⅱ)>(Ⅰ)>(Ⅲ);D . (Ⅱ)>(Ⅲ)>(Ⅰ)。
[单选题]CH3CH2CH(Br)CH3在KOH的乙醇溶液中共热,主要产物是()。A . AB . BC . CD . D
CH3-|||-CH3CHCHCHCH2CH3-|||-CH3 CH2CH3 2.CH3-|||-CH3CHCHCHCH2CH3-|||-CH3 CH2CH
[单选题](CH3)2CHCH(CH3)2的名称为A.1,4-二甲基丁烷B.2,4-二甲基丁烷C.异已烷D.1,1,4,4-四甲基乙烷E.二异丙烷
12.[填空题]-|||-_(H)_(3)-CH-C(H)_(2)-CH-CH-CH-C(H)_(3)-|||-CH3 CH2 CH2 CH3-|||-CH3
(66)解释下列事实:-|||-Br Br-|||-CH3CH=C-C H3→CH3 HBr a CH2C- - CH3 + CH3CH- -CHCH3-|||
[单选题]CH3—CH(C2H5)—CH—CH3的名称是()A . 1,3—二甲基戊烷B . 2—甲基—3—乙基丁烷C . 3,4—二甲基戊烷D . 2,3—二甲基戊烷
-c- CH-CH3-|||-B H2C 1-|||-H-|||-CH3CH3-|||-C CH3 c- CH-CH2-|||-i H-|||-CH3CH3-|