27843-27-2Relevant articles and documents
COMPETITIVE REARRANGEMENTS. I. NEOPENTYLIC VERSUS SKELETAL BICYCLOOCTANE -> BICYCLOOCTANE REARRANGEMENTS
Ionica, Ileana,Ghiviriga, Ion,Filip, Petru,Badea, Florin,Dinulescu, Ilie G.
, p. 1007 - 1016 (2007/10/03)
Generation of a carbenium ion common to two systems which are able to undergo either a skeletal bicyclooctane --> bicyclooctane rearrangement or a neopentylic rearrangement conducts only to the latter reaction. Thus, 8-carbomethoxy-7-t-butyl-dibenzobicyclooctatriene (15) reacts with strong acids or bromine, yielding neopentyl rearranged products 17, respectively 21. Reaction mechanisms are proposed.
A CONVENIENT ROUTE TO ALKYNES VIA PHASE TRANSFER CATALYSIS; ( APPLICATIONS OF PHASE TRANSFER CATALYSIS, PART 19 )
Dehmlow, Eckehard V.,Lissel, Manfred
, p. 1653 - 1658 (2007/10/02)
High yield, rapid formations of alkynes from vic-dibromides are possible using powered potassium hydroxide and catalytic amounts of lipophilic phase transfer catalysts.Reasons are given why molar amounts of expensive catalysts were necessary in earlier procedures.