tert-butoxide 叔丁醇(20)   叔丁醇      The reaction conditions were optimized:n[1-(trans-4-alkylcyclohexyl)-3-fluorobenzene]∶n(potassium tert-butoxide)∶n(n-butyllithium)∶n(tributyl borate)=1∶2∶1.2∶1.5,reaction temperature-85～-90 ℃ and reaction time 2.5 h.      优化了反应条件:n[1-(反式-4-烷基环己基)-3-氟苯]∶n(叔丁醇钾)∶n(丁基锂)∶n(硼酸三丁酯)=1∶2∶1.2∶1.5,反应温度-85~-90℃,反应时间2.5 h。 短句来源      Three compounds of 2-fluoro-4-(trans-4-alkylcyclohexyl)phenylboronic acid were synthesized using 1-(trans-4-alkylcyclohexyl)-3-fluorobenzene,n-butyllithium,tributyl borate,and potassium tert-butoxide as reactants,their yields were 52%～56%,and their structures were confirmed by IR and ~1HNMR.      以1-(反式-4-烷基环己基)-3-氟苯与丁基锂、硼酸三丁酯、叔丁醇钾为反应物合成了2-氟-4-(反式-4-烷基环己基)苯基硼酸化合物3个,总收率为52%~56%,分别用IR,1HNMR对其结构进行了鉴定。 短句来源      The addition of potassium tert-butoxide shortened the reaction time from 7 h to 2.5 h.      叔丁醇钾的加入使反应时间由7 h缩短至2.5 h。 短句来源      Novel hole transporting material APB were synthesized with 9-bromoanthracene and arkylamine DPB as raw materials in the mixture catalyst of sodium tert-butoxide,Pd(OAc)_2/P(t-Bu) system.      以二苯基联苯二胺(DPB)和9-溴蒽为原料,在叔丁醇钠强碱环境下,以Pd(OAc)2/P(t-Bu)3为催化剂合成了新型空穴传输材料N,N’-二苯基-N,N’-二蒽基-1,1’-联苯-4,4’-二胺(APB)。 短句来源      In the experiment,sodium amide, sodium triphenyl methane, and sodium tert-butoxide are selected as catalyst for synthesis of instead 2-cyano-2-(p-nitro phenyl)ethyl acetate to displace the high dangerous catalyst sodium hydride.      实验选用氨基钠、三苯甲醇钠和叔丁醇钠作催化剂 ,以代替高危险性的催化剂氢化钠来合成 2 -氰基 - 2 -对硝基苯基乙酸乙酯。 短句来源 更多          “tert-butoxide”译为未确定词的双语例句      4,12-dibromo[2,2]paracyclophane is allowed to react with benzophenone imine in sodium tert-butoxide base and Pd-DPPFcatalyst to produce 4-benzophnoni mine- 12-bromo[2,2]paracyclophane      4-二苯甲酮亚胺-12-溴-[2，2]环仿在酸性条件下水解为4-氨基-12-溴-[2，2]环仿。 用左旋樟脑磺酸与胺成盐进行拆分得到(-)-4-氨基-12-溴-[2，2]环仿和(+)-4-氨基-12-溴-[2，2]环仿。 短句来源      The key intermediate for the synthesis was 2-O acetyl-3, 4-di-O-benzyl 6-deoxy-a-L-talopyra nosyl chloride, which was converted into the target compound by ring closure with potassium tert-butoxide.      首先合成(?) 脱氧塔罗糖的衍生物(5),再经过一系列反应得到2-O-乙酸基-3,4-(?) 短句来源      The condensation reactions of α,α-diacetyl ketene dithioacetals with arylaldehydes catalyzed by sodium tert-butoxide were performed. These reactions were affected by the alkylthio groups.      在碱性条件下 ,α,α-二乙酰基二硫缩烯酮和芳醛的缩合反应受烷硫基的影响 . 短句来源   相似匹配句对      Preparation of Sodium tert-Butoxide      叔丁醇钠的合成 短句来源      Polymerization of Methyl Methacrylate by Copper(I) Tert-Butoxide      叔丁醇亚铜催化甲基丙烯酸甲酯聚合 短句来源      New Synthesis Technology of Sodium tert-Butoxide      叔丁醇钠合成新工艺 短句来源      Production of Potassium Tert Butoxide by Azeotropic Distillation with Reaction      共沸反应精馏制取叔丁醇钾 短句来源      TERT-TRAIL.      TERT-TRAIL构建成功。 短句来源 查询“tert-butoxide”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   tert-butoxide Crucial for the success of the C-N bond forming reaction is the use of potassium tert-butoxide as base and reaction temperatures >amp;gt; 120°C. 例句来源       Infrared absorption spectra and the structure of lithium tert-butoxide in electron-donor solvents 例句来源       Regioselectivity of reductive debromination of substituted pentabromobenzenes with sodium tert-butoxide in DMSO 例句来源       A system aluminum (and titanium) tert-butoxide-tert-butyl hydroperoxide (1 : 2) under mild conditions (20 °C, 1 h) oxidizes aliphatic and alkylaromatic sulfides and diphenyl sulfide to the corresponding sulfones in yields close to ～100%. 例句来源       Liquid-phase oxidation of sulfides by an aluminum (and titanium) tert-butoxide-tert-butyl hydroperoxide system 例句来源       更多                    Fluoroalkyl iodide R_fI(1) [a R_f=CF_3(CF_2)_5; b R_f=(CF_2)_6Cl; c R_f=(CF_2)_4Cl; d R_f (CF_2)_2Cl; e R_f=CF_3(CF_2)_2; f R_f=H(CF_2)_4; g R_f=(CF_2)_4O(CF_2)_2SO_2F]reacted with trimethylsilylacetylene (2) in the presence of catalytic amounts of copper in acetonitril to give a mixture of E and Z-fluoroalkylated adducts, R_fCH=CISiMe_3 (3) in good yield. Reaction of a, ω-fluoroalkylene diiodide e.g. I(CF_2)_6I (4) with 2 under the similar conditions formed the mono-adduct, I(CF_2)_6CH=CISiMe_3 (5) and th...             在催化量的铜存在下,R_fI(1)在很温和的条件下于乙腈中与乙炔基三甲基硅烷(CH≡CSiMe_3)(2)反应,生成较高产率的(E)和(Z)-氟烷基化产物混合物(3).在相同条件下,I(CF_2)_6I(4)也能与2反应,主要生成单烷基化产物[I(CF_2)_6CH=CISiMe_3](5)和少量的双烷基化产物[Me_3SiCI=CH(CF_2)_6CH=CISiMe_3](6).当1与双(三甲基硅基)乙炔(Me_3SiC≡CSiMe_3)反应得1∶1的加成产物[Ri(Me_2SiCH_2I)C=CHSiMe_3](7)和(R_fMe_3SiC=CISiMe_3)(8).3与氢氧化钾在乙醇中反应得到(E)-R_fCH=CHI(9);与氟化钾反应则生成9的Z和E的异构体混合物;在二氯甲烷中用叔丁醇钾处理则生成相应的炔烃(10).3在室温下对酸稳定,用溴光照后则主要生成(E)-R_fCH=CBrSiMe_3(11). 文摘来源          The treatment of wool under anhydrous conditions with potassium tert-butoxide solu-tion is studied. The aim is to confine reaction to the extreme exterior off the epicuticle of the fiber and to prevent whole-fiber degradation. The results indicate thaf inter-fiber arid inter-yarn friction,tenacity and dye uptake increase,yethandle tends to be as rough as expected. And the most important thing is to keep anhydrous conditions in the treatment,             研究了羊毛纤维在叔丁醇钾无水醇溶液中的改性问题。使用无水溶液的目的是了使得羊毛纤维在不发生全面降解的情况下，通过只与鳞片表层的作用来改善羊毛性能。结果表明，通过碱去除的只是鳞片最外层的疏水层和类脂物质，而处理后的羊毛纤维摩擦力增加，强力与上染率也都有所增加，但手感正如估计的那样趋于粗糙。这一处理的至关重要的一点就是要保证无水条件。 文摘来源          The title compound was synthesized from L-rhamnose by a series of steps. The key intermediate for the synthesis was 2-O acetyl-3, 4-di-O-benzyl 6-deoxy-a-L-talopyra nosyl chloride, which was converted into the target compound by ring closure with potassium tert-butoxide. The 1H NMR spectrum of the anhydro sugar was determined by the use of single frequency decoupling. The new compounds obtained in the synthesis were identified by their 1H NMR spectra,elemental analysis,mass spectra and optical r...             以L-鼠李糖为原料.首先合成(?)脱氧塔罗糖的衍生物(5),再经过一系列反应得到2-O-乙酸基-3,4-(?)-O-(?)基-6-脱氧-α-L-塔罗吡喃糖氯代物(9),在叔丁醇钾的作用下,化合物9很容易关环得到最终产物1,2-内醚糖. 文摘来源   << 更多相关文摘         相关查询: tert- - tert- tert-alkyl tert-butyl di-tert tert-olefins tert-butylphenyl tert-butylhydroquinone 2-tert tert-octylphenol tert-pentyl tert-pentanol  对查询结果不满意

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