CONF 08500 AlkeneExercises¬ AlkyneExercises¬ TEXT HEAD Alkyne¬ LINE¬ TITL Alkyne Introduction¬ 00 PLAN¬ IGNO In Alkyne there is a triple bond between ¬COLR 255 000 000 C¬COLR 000 000 000 elements, so amount of¬COLR 255 000 000 H¬COLR 000 000 000 elements are less in 4 than the Corrosponding alkane compound. ¬ COLR 000 000 000 General formula of Alkyne is ¬ CIMG 000 000 cnh2n-2¬IGNO.¬LINE¬ IGNO Some of the compounds in this family are¬ LINE¬³ CMPD LONE 070 000 ethyne¬ LONE 000 000 prop-1-yne¬ LONE 000 000 but-1,3-diyne¬ LONE 000 000 but-1-yne¬ LONE 000 070 but-2-yne¬³ TRGT TEXT TITL Preperation¬ 00 LINE¬³ TEXT TITL Preparation of Alkyne in Laboratory¬ 00 LINE¬³ TRGT TEXT IGNO 1. Calcium Carbide with Cool water ¬LINE¬PLAN¬³ TEXT LINE¬³ RACT CIMG 010 000 cac2¬ PLUS 050 025 CIMG 000 000 h2o¬ ARRW 050 050 025 NULL¬ NULL¬ CIMG 000 000 caoh2¬ PLUS 050 025 CIMG 000 020 c2h2¬³ TEXT LINE¬³ TRGT TEXT IGNO 2. Using Ethylene Dibromide ¬LINE¬PLAN¬ IGNO Ethylene Dibromide is heated with alcoholic ¬ CIMG 000 000 koh¬ IGNO This will remove ¬COLR 255 000 000 Br¬COLR 000 000 000 and form an Alkyne.¬LINE¬³ TEXT LINE¬³ RACT CMPD 060 000 1,2-dibromoethane¬ ARRW 050 160 140 alcoholic¬ koh¬ CMPD 000 000 ethyne¬ PLUS 050 025 CIMG 000 000 HBr¬³ TEXT IGNO ¬LINE¬³ RACT CIMG 050 000 KOH¬ PLUS 050 025 CIMG 000 000 HBr¬ ARRW 050 050 025 NULL¬ NULL¬ CIMG 000 000 KBr¬ PLUS 050 025 CIMG 000 030 H2o¬³ TEXT LINE¬³ TRGT TEXT TITL Reactions¬ 00 LINE¬³ TRGT TEXT TITL Reaction with Hydrogen¬ 00 IGNO Alkynes react with Hydrogen with catalyzers ¬ CIMG -02 000 Pt¬ CIMG 000 000 Pd¬ CIMG 000 002 Ni¬ IGNO and forms corrosponding Alkane.¬LINE¬³ RACT CMPD 070 000 ethyne¬ PLUS 050 025 CIMG 000 000 h2¬ ARRW 050 140 140 Pt¬ NULL¬ CMPD 000 030 ethane¬³ TEXT LINE¬³ RACT CMPD 070 000 prop-1-yne¬ PLUS 050 025 CIMG 000 000 H2¬ ARRW 050 140 140 Pt¬ NULL¬ CMPD 000 100 Propane¬³ TEXT LINE¬ IGNO This series of reaction is valid not only for Alkyne group, mostly but also for other compounds that have 2 or more triple bonds¬LINE¬³ RACT CMPD 090 000 1-phenylprop-1-yne¬ ARRW 070 320 200 H2¬ Pt¬ CMPD 000 100 1-phenylpropane¬³ TRGT TEXT LINE¬ TITL Reaction with Halogen ¬ 00 IGNO Reaction between Halogen and Alekene is an additive reaction¬LINE¬³ RACT CMPD 070 000 ethyne¬ PLUS 050 025 CIMG 000 000 cl2¬ ARRW 050 160 120 NULL¬ NULL¬ CMPD 000 030 1,1,2,2-tetrachloroethane¬³ TEXT LINE¬³ RACT CMPD 070 000 ethyne¬ PLUS 050 025 CIMG 000 000 br2¬ ARRW 050 160 120 NULL¬ NULL¬ CMPD 000 030 1,1,2,2-tetrabromoethane¬³ TEXT LINE¬³ RACT CMPD 070 000 ethyne¬ PLUS 050 025 CIMG 000 000 i2¬ ARRW 050 160 120 NULL¬ NULL¬ CMPD 000 030 1,1,2,2-tetraiodoethane¬³ TEXT LINE¬³ RACT CMPD 070 000 prop-1-yne¬ PLUS 050 025 CIMG 000 000 br2¬ ARRW 050 160 120 NULL¬ NULL¬ CMPD 000 030 1,1,2,2-tetrabromopropane¬³ TEXT LINE¬³ RACT CMPD 090 000 1-phenylprop-1-yne¬ ARRW 070 320 200 br2¬ Pt¬ CMPD 000 070 1,1,2,2-tetrabromo-1-phenylpropane¬³ TRGT TEXT LINE¬ TITL Reaction with Halides ¬ 00 IGNO Additive reaction happen between Alkyne and Halides¬LINE¬³ RACT CMPD 070 000 ethyne¬ PLUS 050 025 CIMG 000 000 hbr¬ ARRW 050 120 140 NULL¬ NULL¬ CMPD 000 030 1,1-dibromoethane¬³ TEXT LINE¬PLAN¬ IGNO In the reaction ¬COLR 255 000 000 Br ¬COLR 000 000 000 generally connects to the ¬COLR 255 000 000 C¬COLR 000 000 000 which has more ¬COLR 255 000 000 C¬COLR 000 000 000 Connections, the same way it is for the Alkene¬LINE¬³ RACT CMPD 070 000 prop-1-yne¬ PLUS 050 025 CIMG 000 000 hbr¬ ARRW 050 180 140 NULL¬ NULL¬ CMPD 000 030 2,2-dibromopropane¬³ TEXT LINE¬³ RACT CMPD 070 000 prop-1-yne¬ PLUS 050 025 CIMG 000 000 hcl¬ ARRW 050 180 140 NULL¬ NULL¬ CMPD 000 030 2,2-dichloropropane¬³ TRGT TEXT LINE¬ TITL Oxidization in Acidic medium¬ 00 IGNO Alkyne can be Oxidized using strong Oxidizer like Acidic ¬ CIMG 000 000 kmno4¬ IGNO . The result is same as the one gained by oxidizing corrosponding Alkene¬LINE¬³ RACT CMPD 070 000 prop-1-yne¬ ARRW 080 240 140 acidic¬ kmno4¬ CMPD 000 030 2oxoproponoic¬³ TEXT LINE¬PLAN¬ IGNO The result can be changed according to the shape of the compound¬LINE¬³ RACT CMPD 070 000 1-phenylprop-1-yne¬ ARRW 080 180 140 acidic¬ Kmno4¬ CMPD -15 070 1-phenylpropan-1,2-dione¬³ TRGT TEXT LINE¬ TITL Oxidization in Basic medium¬ 00 IGNO Alkyne reacts with an Oxidizer in a basic medium and forms following results ¬LINE¬³ RACT CMPD 070 000 ethyne¬ ARRW 080 180 140 basic¬ kmno4¬ CMPD 000 030 ethandial¬³ TEXT LINE¬³ RACT CMPD 070 000 prop-1-yne¬ ARRW 080 240 140 basic¬ kmno4¬ CMPD 000 030 2-oxopropanal¬³ TEXT LINE¬³ RACT CMPD 070 000 1-phenylprop-1-yne¬ ARRW 080 180 140 basic¬ Kmno4¬ CMPD -15 070 1-phenylpropan-1,2-dione¬³ TRGT TEXT LINE¬ TITL Hydration¬ 00 IGNO Alkyne can be Hydrated in an acidic medium. it forms corresponding alcohol and then oxidize resulting the aldehyde. ¬LINE¬³ RACT CMPD 070 000 ethyne¬ ARRW 070 180 160 h2so4¬ hg2+¬ CMPD -10 000 ethan-1,1-diole¬ ARRW 070 180 140 NULL¬ NULL¬ CMPD 000 050 ethanal¬³ TEXT LINE¬PLAN¬ IGNO In the reaction ¬COLR 255 000 000 OH¬COLR 000 000 000 and¬COLR 255 000 000 O¬COLR 000 000 000 generally connects to the ¬COLR 255 000 000 C¬COLR 000 000 000 which has more ¬COLR 255 000 000 C¬COLR 000 000 000 Connections¬LINE¬³ RACT CMPD 070 000 prop-1-yne¬ ARRW 050 220 160 h2so4¬ hg2+¬ CMPD -15 030 propan-2,2-diole¬ ARRW 030 220 140 NULL¬ NULL¬ CMPD 015 050 propan-2-one¬³ TEXT LINE¬LINE¬LINE¬³ RACT CMPD 070 000 1-phenylprop-1-yne¬ ARRW 070 280 140 h2so4¬ hg2+¬ CMPD -15 000 1-phenylpropan-2,2-diole¬ PLUS 280 140 CMPD 000 000 1-phenylpropan-1,1-diole¬ ARRW 030 280 140 NULL¬ NULL¬ CMPD 000 000 1-phenylpropan-2-one¬ PLUS 280 140 CMPD 000 050 1-phenylpropan-1-one¬³ TRGT TEXT LINE¬ TITL Reaction with Metallic salts¬ 00 IGNO Alkyne Reacts with metallic salts and replace the metal with hydrogen due to its high electro negativity. ¬LINE¬³ RACT CMPD 070 000 ethyne¬ ARRW 080 180 160 Cu2Cl2¬ Ammonia¬ CMPD 000 000 Copper Asitalide¬³ TEXT LINE¬³ RACT CMPD 070 000 ethyne¬ ARRW 080 180 160 AgNO3¬ Ammonia¬ CMPD 000 050 Silver Asitalide¬³ TEXT LINE¬ IGNO Alkyne also reacts with the Grignard reagents .¬LINE¬³ RACT CMPD 070 000 ethyne¬ ARRW 140 180 160 RMgBr¬ ether¬ CMPD 000 050 BrMgCCMgBr¬³ ENDP