and kinetically competent catalysts for this transformation. The fleeting transmetalation intermediate has been successfully synthesized through an alternative synthetic organometallic pathway at lower temperature, allowing for in situ NMR study of the C–N bond reductive elimination step. This study addresses key factors governing the mechanism of the nickel-catalyzed Buchwald–Hartwig amination process
Two-photon absorbing chromophores containing polymerizable olefinic groups
申请人:The United States of America as represented by the Secretary of the Air Force
公开号:US07067674B1
公开(公告)日:2006-06-27
Provided are chromophores of the formula:
wherein R is an alkyl group having 1 to 20 carbon atoms, and Q is —(CH2)n—Br,
and wherein n has a value of 2–6.