witting
1.Involve issue of the following law: 1 copyright 2 reorganize advantageous position 3 former writers are witting authority.
2.It is common that witting rate was lower, and it is urgent that people need health care knowledge and health service.
3.Zhang Xiong is to start work first hit Zhang Sheng, the course hits average time two women are witting also hit.
4.The result shows that the activity of aluminium at the carbon plate electrode gradually increases and the witting θ on it decreases with the BEMF increase.
5.Come nearly a few years, in the change of the our country extension as population hope life and lifestyle, hypertension already became the serious illness of health of current and minatory people, and of our country crowd measure pressure rate and witting rate are low however startling.
6.Sulfony 13 oxybicyclo[9.3.0]tetradec 3,8 diyne is the precursor of the bicyclic enediyne which has been synthesized from cis 1,2,3,6 tetrahydropathalican hydride by 8 step reactions. We got the goal compound by reduction of anhydride, ozonolysis of 8 oxabicyclo[4.3.0]non 3 ene, Witting reaction with PPh 3/CBr 4, formation of alkyne and esterification, reduction of the ester, formation of the mesylate, cyclization with sodium sulfide nonhydrate.
7.It has been used for a great variety of organic reaction as esterification and saponification, sulfonation, oxidation, hydrolysis, olefin addition, replacement, condensation, alkylation, rearrangement, Diels-Alder reaction, Reformatsky reaction, Knovenagel reaction, Perkin reaction, Deckmann reaction, Witting reaction, Bischler-Napieraski reaction, Protection and deprotection, concerted reaction, cyclization and ring-opening, etherification, etc.
