65938-39-8Relevant academic research and scientific papers
Preparation and Some Reactions of (Acylamino)diorganoboranes
Yalpani, Mohamed,Koester, Roland,Boese, Roland
, p. 565 - 570 (2007/10/02)
The carboxamides RCONH2 react with BEt3 and with (9H-9-BBN)2 to give the (acylamino)diethylboranes 3, 4 and the 9-acylamino-9-BBN 5, 6, respectively.Compounds 3 and 4 are largely monomeric (NMR) in solution and dimeric as crystalline solids 2>.The 9-BBN derivatives 5 and 6 are associated and probably polymeric in solution (NMR).The 1:1 adducts 7 and 8 containing the ring (X-ray structure of 7) are formed on the reaction of 3 and 4 with (9H-9-BBN)2 by borane exchange.The former is also obtained directly by treating compound 1 or 2 with (9H-9-BBN)2.Compound 7 reacts at 140-150 deg C to give the air-stable heterocycle 11 (X-ray structure). Key Words: Amides/Boranes, trialkyl-/Boranes, dialkylhydro-/Boron-nitrogen heterocycles/Bis(9H-9-borabicyclononane).
