hydrobromide perbromide had earlier been selectively used Fig. 1. Fig. 2. for nuclear bromination of phenols (13). Another method of entry to 3,4-benzo-9-bromo-2-oxabicylo[3.3. llnonane of the type 9 may involve oxymercuration and replacement of the chloromercury group by bromine, which is a relatively low- yield (10) (overall) process.
Officially, Vladimir Putinâs net worth is thought to be around $70 billion according to Forbes, which makes the Russian the second-richest man in the world since Bill Gatesâ net worth is $79.3 billion in 2015.
Vladimir Putin. Get the facts about Russian President Vladimir Putin and his rise to power. Introduction. Russian leader Vladimir Putin was born in 1952 in St. Petersburg (then known as Leningrad). After graduating from Leningrad State University, Putin began his career in the KGB as an intelligence officer in 1975. Putin rose to the top ranks of the Russian government after joining President Boris Yeltsinâs administration in 1998, becoming prime minister in 1999 before taking over as president. Putin was again appointed Russian prime minister in 2008, and retained his hold on power by earning reelection to the presidency in 2012. Play video Vladimir Putin 3min