Activity and selectivity of DMAP derivatives in acylation reactions
A library of novel chiral DMAP derivatives were synthesised from 4-chloropyridine and. 3,5-dibromo-4-chloropyridine to give a diverse range of DMAP derivatives ... 
Synthesis of asymmetric DMAP derivatives and their applications in ...... (DMAP). 1,4- diazabicyclo[2.2.2]octane (DABCO) is a stronger nucleophile than all isothioureas investigated, but its. Lewis basicity (with respect to. Ar2CH+) ... Reactivity Parameters for Understanding Nucleophilic OrganocatalysisDensity and/or relative density. Density. 0,96 g/cm³ at 22 °C. Relative vapour density not relevant (solid). Bulk density. ~520 kg/m³. Particle characteristics. Safety Data Sheet: DMAP - Carl ROTHDensity and/or relative density. Density. 0.96 g/cm³ at 22 °C. Relative vapour density not relevant (solid). Bulk density. ~520 kg/m³. Particle characteristics. New Concepts in Prestressed Concrete Pavement (Report 401-2)One approach to minimizing the cracking problem in lock wall resurfacing is to use precast penels as stay-in-place forms. A precast panel rehabilitation ... A Demonstration of the Constructibility of a Precast Concrete ... - DTICPre-cast concrete blocks ... so that support for the new block is obtained from the previously-placed blocks. PRESTRESSED-CONCRETE-STRUCTURES-1.pdfA 300 300 mm column supports a 300 mm wide precast beam on a single sided reinforced concrete corbel. The beam has pretensioning strands extending to the. SCHOOL GUIDE REIMEI 2 017 - ???????????. ?????????????????????? ???????????. ?? ?????. ? ????????. ? ???????. ? ???. ? ?? 24 ????. SS???? ????? ???? - ?????????????6????????SS?????????????????????????. ??? ???????????????????????????SSH?????? 14 ... ???????78???????????. ??????????????????. ?????????????????. ?NMR??????????????. ????? ... ???????? - ????? ??. ??. ???. ?? ??. ??. ??. ?? ??. ??. ???. ?? ?. ?. ??. ?. ??. ??. ??. ?? ??. ??. ???. ?? ... ??? ??????????? - ????????????. 2015 ? 2 ????????????. ?????????????????. ?????????????????. ???????????????? ... NEW AMMONIUM DERIVATIVES, A PROCESS ... - Googleapis.comLe projet présenté au cours de cette thèse porte sur la formation de centres quaternaires entièrement carbonés. Plusieurs axes d'approche ...
