1、bra a. . c6h5ch2br按按s sn n1 1和和s sn2 2機理都很容易，按機理都很容易，按s sn n1 1形形成中間體成中間體 ，穩定，按，穩定，按s sn2 2機理形成過渡機理形成過渡態是共軛體系，能量低。態是共軛體系，能量低。 ch2+ b(c6h5)2chbr 按按sn1機理很容易，形成中間體機理很容易，形成中間體(c6h5)2ch很穩定；按很穩定；按sn2機理進行反應難，形成機理進行反應難，形成過渡態時空間阻力大。過渡態時空間阻力大。 brno2brno2brch3ch3n(ch3)3brcl+- n(ch3)3brno2brno2brch3ch3cl+-et ch

2、brchdet主要產物：主要產物： 少量少量 穩定： 不穩定：etchcdetetchcdethdethbrethdethbret解：解：因為反因為反-2-氯環己醇堿性水解有鄰基參與，而氯環己醇堿性水解有鄰基參與，而順式沒有。順式沒有。 clohcloooh2ohoh-oh-cl-ohcoohohoho2nno2ohohome解：解： a c d b e 因為因為a為酸，為酸，c的的no2有有c效應、效應、i效應，效應， 穩定，穩定， d的的no2有有i效應，效應，e的的och3有有c效應。效應。oo2n-(ch3)3coch3et2och3i (ch3)3cohch3oh (ch3)3ci無

3、水 hi濃hi+o rih+( )+( )ohriohh2so4br2+(濃)( )+( )hbrbrhhbrbrhbrhch2oh+( )brch3ch2cch3brch3ch2ch ch2ona+( )+( )h3cchc(ch3)2ch2cch3c2h5ome(ch3)3cooh2( )-(ch3)3cohch2och3( )+( )ch2ohch2ohbrh+ch2brch2ohch2ohbrcohcohphphphch3h+( )ccophphch3phohhoch2ch2ch2ch2cl( )och3ch3o ch2ch chch3( )*ch3ch3ohch2ch chch3*(

4、 )+( )ch3hich3ch3oh25 c。ch3hch3omech3hch3omech3ohch3hihch3o50 c。( )+-ch3ch2chch2ch3ohch2chch2ch3ohmgxchch2ch3ch2o+brmg+br2+ch2chch2ch3h3ccoooh+br2brbrhfecl3+brmgmgbr+醚ch2chch2ch3h3ccoooh+chch2ch3ch2och3cooh+mgxch2chch2ch3omgbroh3och2chch2ch3oh+ccch3ch2hch2ch2ohhch3ch2cc ch2ch2ohch3ch2ccnach2ch2o+nac

5、cnach3ch2br+chchnacchchchnanh2nh3ch3ch2brch3ch2cchnh3nanh2ch3ch2ccnach2ch2och3ch2cc ch2ch2ohhccch3ch2hch2ch2ohh+液液2lindlar pt.低溫低溫高溫高溫occoo f：occoo e： d:ch2chchch3oh c:ch2chchch3cl b:clch2clchch2ch3 a:ch2chch2ch3低溫低溫高溫高溫occoo f：occoo e： d:ch3chchch2oh c:ch3chchch2cl b:clchch3ch3clch a:ch3chchch3 a可能為可能為:oh(ch