Question

Write a mechanism for the given reaction. Identify each sequence of the mechanism. Use proper curvedamow Caleate a AH for each step of the reaction. You only have to show your mechanism one time, but write out all ble stereoisomers and point out any relationships between them (enantiomers, diastereomers mesos Specify absolute configurations in your first stereoisomer. There may or may not be fewer structures than letters below. (25 pts) bond energies cc 63 ROOR (cat.) D- Br Product(s) D-Br C-Br C-D 0-0 O-D 68 96 40 111 Possible products

Answer 1

Data Page Mechanism This is free radical reaction Addi tion of D-8 is according to Antimaakovnikofr's ule negative par of reagenk 1 carbon aom The to that goes less substbuted which is Mechanism ceeds through 3 Sleps pro Initialion Paopagation Step- step- II Step T Teamination कैन OF light homoly tic ission taKes place prerene ROOR Initiation 20R RO ROD (clculatcd or वावय specie. Can't AH Step-r Propagation react oith radical species More Here alkene is hormed as stable bree radi cal inter mediatk hep 89 ROLD BT И и 1 +t DB Hore product haring two chiral emters ARB are diastereamess each other

Data Paga can be calcalated by uing borrmuld AH Yalue or step I given velues 4 bond emergle sHreactton Bo nd cnesgles (reactant Bond Energfes CProduct) Given Bond values enesgy 63, D-B= are- C-B- 68,CDI96 40 OIOD O-D 1 In poducE 126 In reactant 2 C-C= 2 bonds C-C 2X63 bonds 120 C-H 2 x60 2 bmd (92 C-D 96 11 I C-Br 68 Totat Total 506 ОH - 506 342 164 K3/mol. Step-T: Termination J = D-D Ro t Ro Ro-oR Ro + D ROD This step is having pree radicals so sn value cant calculaed