Webb15 dec. 2024 · 二(三甲基硅基)氨基钠(nahmds) 是同系化合物的一个代表,还有二(三甲基硅基)氨基锂(lihmds) 和二(三甲基硅基)氨基钾(khmds)。它们是有机合成中应用非常广泛的大位阻强碱试剂,二(三甲基硅基)氨基在四氢呋喃中pka = 29.5[1]。 Webb12 jan. 2024 · 在筛选合成磺酸酯中间体 11 的最佳反应条件时发现,KHMDS 和N-苯基双 (三氟甲烷磺酸亚胺) (PhNTf2 )的加料顺序对反应影响较大,KHMDS 先于PhNTf2 加 图3 低区域选择性产生的副产物 入反应体系,会有大量的副产物16 生成,而KHMDS 后于PhNTf2 Fig. 3 Side products arising from poor 加入反应体系,则几乎观测不到16 的生成(如图3 …
N-苯基双(三氟甲烷磺酸亚胺) 99% Sigma-Aldrich
WebbFind phntf2 and related products for scientific research at MilliporeSigma. US EN. Applications Products Services Support. Advanced Search. Structure Search. Search Within. Products Technical Documents Site Content Papers Genes Chromatograms. Product Category. esiRNA (2) antibodies (1) antigens (1) primary antibodies (1) Brand. Webb7 maj 1998 · Cyclohexyne precursor 2 was prepared in 78% yield by reducing 16 with L-Selectride and trapping the resulting enolate with PhNTf2 as shown in Scheme 1. 0 OTf [~ TMS a) L-Selectdde [~TMS b) PhNTf2 1 2, 78% Scheme 1 To test the feasibility of cycloaddition of cyclohexyne to ~-pyrones, we examined the reaction of the simple … sia and yeo heavy equipment
N-Phenyl-bis(trifluoromethanesulfonimide) 99 37595-74-7 - Sigma …
WebbApplication. Acts as a transparent strong electron-withdrawing p-type dopant in carbon nanotubes. Reactant for: Synthesis of amphoteric alpha-boryl aldehydes. Enantioselective synthesis of core ring skeleton of … http://www.bioon.com.cn/doc/showarticle.asp?newsid=64935 Webb应用. 在碳纳米管中作为透明强吸电子p-型掺杂物. 可用作以下反应的反应物:. 两性alpha-硼醛合成. 防御性二倍半萜化合物A-D主环骨架的对映选择性合成. 单胺重摄取抑制物NS9544醋酸酯的空间选择性合成. 空间选择性磺化氧化作用. 温和的三氟甲磺酸化试剂。. 近来 ... sia and miguel tickets