Question

Could someone show me the arrow pushing mechanisms for these reactions? Thank you! (Addition reactions of alkenes and alkynes- Organic Chemistry 1)
Br, ДО txipolar protic) BOH em BrtEn

Answer 1

৪ই, H২০ + En Br Ht BYP :BP-Br HO Bf Here ald fofmed Both ore Scanned v nantiomerg

Here aftep the fofmation f boniun org Hho attaekthe more Pasi-tive arld hindered Carbor to get the Roduet H9S04 Ho R-CEH H92t R-e Ee-H 92 Hag R-ee-H R-C e-H 0H OH A Here, the H92t fo a TeemPlex with alke Then Waler attaeK 4he bridge ion to get. Then hydA CSvendwoduet Scar W CamScanner

X R-eEe-H X2 X ২य X हा हैं-४ R-e メーメ R. X X R X alKyne eaet with to give eYelie 1an then attack b x to give The dain by vefeating this Proce3 the Procue CS Sc ed. CamScanner : with

R-ee-H H-X R-ee R- (A X X R. alkyne feact with Htogive mefea cation then x feact with it to 8ive Than again feaet togive eonae Stabilized Castion Then xe ataer togive +he Arad uet Scanned with CamScanner エエ