Liu Huang

Dang Gui Liu Huang Tang (Tangkuei and Six Yellow Decoction)... 

Several non-noble metal-catalyzed iV-alkylation reactions have also been reported in recent years. In 2010, Ramon, Yus and co-workers reported Cu(OAc)2-catalyzed A-alkylation of poor nucleophilic amine derivatives and alcohols (Eq. 30) [125]. Control experiments indicated that a base was indispensable in the reaction to force the alcohol dehydrogenation step, which was later confirmed by DFT calculations reported by Liu, Huang and co-workers [63]. In 2011, Ramon and co-workers reported the results of their own mechanistic studies and proposed two possible catalytic cycles [126]. The main aldehyde-free cycle, depicted with plain arrows, requires the presence of a base. The minor cycle, depicted in dashed arrows, may proceed when an aldehyde exists in the reaction media (Scheme 23). In the same year, Li and co-workers also disclosed a CuCl-catalyzed A-alkylation of heteroarylamines [127]. 

The position of a Supervision Engineer has been a legal requirement for all types of government-financed construction projects in China since the implementation of Provisional Construction Supervision Ordinance in 1988. The project supervision system was initially implemented in China s hydropower construction field and has been gradually extended to the whole constmction industry (Wang, Liu, Huang 2007). Normally the supervision engineers are employed by construction supervision units. 

Wu HE, Huang LR, Huang CC, Lai HE, Liu CJ, Huang YT, Hsu YW, Lu CY, Chen DS, Chen PJ (2005b) RNA interference-mediated control of hepatitis B virus and emergence of resistant mutant. Gastroenterology 128 708-716... 

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