00:01
Hello everyone in this question they have given three compounds here they've asked that which one of the following have our configuration now let me read these these three compounds so here here we have hydrogen and here we have ch2 ch3 so this is chiral carbon and here below the plane we have methyl group and above the plane we have bromine this is first compound and second compound here they have given this is spiral carbon and we have here ch2, ch3, here we have cl and here we have above the plane hydrogen and here we have below the plane ch3.
00:46
This is our second compound.
00:48
And third compound they have given.
00:50
Here it is ch2, thh3 and here we have hydrogen and below the plane we have oh group and above the plane we have c .h3 group.
01:05
So here it is our third compound.
01:08
Now here let me consider first compound here bromene gets first priority, ethyl get second priority and methyl get third priority.
01:17
It moves clockwise direction so it is rconvigration so here it is r configuration and now let me consider second carbon second compound here it is chiral carbon so here chlorine gets first priority and here ethel gets second priority, methyl gets third priority and hydrogen gets fourth priority.
01:40
It moves and take clockwise direction but the lowest priority group is above the plane.
01:44
Here what happens? the configuration is going to be inverted so it is r configuration...