求翻译:c-c bonds是什么意思?待解决 悬赏分:1 - 离问题结束还有 c-c bonds问题补充:匿名 2013-05-23 12:21:38 C-C键 匿名 2013-05-23 12:23:18 c-c债券 匿名 2013-05-23 12:24:58 c-c债券 匿名 2013-05-23 12:26:38 c c 债券 匿名 2013-05-23 12:28:18 c-c 债券热...
Monomeric units in lignin are bound via C–O and C–C bonds. The majority of existing methods for the production of valuable compounds from lignin are based on the depolymerization of lignin via cleavage of relatively labile C–O bonds within lignin structure, which leads to yields of only ...
Biaryl scaffolds are found in natural products and drug molecules and exhibit a wide range of biological activities. In past decade, the transition metal-catalyzed C–H arylation reaction came out as an effective tool for the construction of biaryl motif
The main reaction is the breaking of C-C bonds. Literature rate expressions, experimentally determined, are found in some cases to be in disagreement. The rate expressions for the decomposition processes at temperatures of 1090 to 1240 K and pressures of 1.5 and 6 atm are k(isobutanol 鈫...
Table 2. Exploring the Limits of the Hydrogenolysis of C(Aryl)−C(Alkyl) Bonds (图片来源:J. Am. Chem. Soc.) 作者还发现,反应温度以及氢气压力也对反应影响很大(Table 2)。当反应温度降低至50 ℃、氢气压力降低至50 psi时,反应只能得到少量目标产物。值得注意的是,降低反应催化剂量至0.5 mol%时,仍...
摘要: C-C Bond formation at the non-anomeric center may result either in chain-extended, higher sugars or branched-chain saccharides; both types being amply represented by the naturally occurring...关键词: Chain extension Aldol reactions Branched-chain sugars Organometallic compounds ...
尽管目前过渡金属催化的不饱和键对C-C键插入的报道已经屡见不鲜,然而形式上的饱和C-H键对C-C σ键的插入却至今没有实现。近期,美国德州大学奥斯汀分校(UT Austin)的Michael J. Krische教授(点击查看介绍)在Science 上报道了Ru催化下邻二醇的两个邻位α C-H键对苯并环丁烯酮C-C键的插入反应,并且成功地将...
The activation of C-H bonds by transition-metal complexes is one of the most efficient methods to form C-C bonds in organic synthesis.We have successfully developed a Rh(I)-catalyzed C-H bond activation series using 2-amino-pyridine derivatives or benzylamine as a chelation auxiliary to induce...
of bicyclo[1.1.0]butyl(BCB) boronate complexes enabled by strain release, which allows asymmetricdifunctionalization of C-C & sigma;-bonds, including di... HC Shen,MV Popescu,Wang, Ze-Shude Lescure, LouisNoble, AdamPaton, Robert S.Aggarwal, Varinder K. - 《Journal of the American Chemical ...
Accurately predicting bond length and bond dissociation energy for bimetallic diatomic molecules that involve metal–metal multiple bonds is a great challenge for electronic structure theory, in part because many of these molecules have ... JL Bao,Z Xin,X Xu,... - 《Physical Chemistry Chemical Ph...