Of Aromatic
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NMR Spectroscopy of Aromatic Compounds (#1e)
www.unm.edu40 13C NMR Spectroscopy of Aromatic Compounds As with other 13C NMR spectra, aromatic compounds display single lines for each unique carbon environment in a benzene ring. Aromatic carbons appear between 120-170 ppm. The 13C NMR spectra of bromobenzene and p-bromoethylbenzene are shown below for comparison.There are four different carbon environments in bromobenzene, and four …
Substitution Reactions of Aromatic Compounds Simple ...
www.chem.uky.edu1 Substitution Reactions of Aromatic Compounds Simple alkenes tend to undergo addition reactions: The elements of the reagent (HBr or Br 2) are simply added to the starting material.
ELECTROPHILIC AROMATIC SUBSTITUTION REACTIONS OF …
www.saplinglearning.com16.4 ELECTROPHILIC AROMATIC SUBSTITUTION REACTIONS OF BENZENE 755 Step 2 Reaction of the benzene p electrons with the electrophile to form a carbocation inter- mediate. (Notice that either of the oxygens can accept the electron pair.) Step 3 Loss of a proton from the carbocation to give a new aromatic compound. Nitration is the usual way that nitro groups are introduced into aromatic rings.
1226 CHAPTER 25 • THE CHEMISTRY OF THE AROMATIC …
www.saplinglearning.com1226 CHAPTER 25 • THE CHEMISTRY OF THE AROMATIC HETEROCYCLES B. Acidity of Pyrrole and Indole Pyrrole and indole are weak acids. With p K a values of about 17.5, pyrrole and indole are about as acidic as alcohols and about 15–17 pK a units more acidic than primary and secondary amines (Sec. 23.5D). The greater acidity of pyrroles and indoles is a consequence of the resonance stabilization ...
HYDROCARBONS, AROMATIC 1501
www.cdc.govHYDROCARBONS, AROMATIC: METHOD 1501, Issue 3, dated 15 M arch 2003 - page 3 of 7 NIOSH Manual of Analytical Methods (NMAM), Fourth Edition 9. Det er mine desorption efficiency (DE) at least once for each batch of charcoal used for sampling in the
POLYNUCLEAR AROMATIC HYDROCARBONS by HPLC 5506
www.cdc.govPOLYNUCLEAR AROMATIC HYDROCARBONS by HPLC: METHOD 5506, Issue 3, dated 15 January 1998 - Page 2 of 9 NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
SAFETY DATA SHEET: AROMATIC 150 - ciscochem.com
www.ciscochem.comHANDLING Avoid breathing mists or vapors. Avoid contact with skin. Potentially toxic/irritating fumes/vapors may be evolved from heated or agitated material.
SAFETY DATA SHEET: AROMATIC 200 - ciscochem.com
www.ciscochem.comIf exposed or concerned: Get medical advice/attention. Get medical advice/attention if you feel unwell. Store in a well-ventilated place. Keep container tightly closed.
Aromatic Compounds Early in the history of organic ...
utdallas.eduAromatic Compounds! Early in the history of organic chemistry (late 18 th, early 19 century) ! chemists discovered a class of compounds which were unusually stable! A number of these compounds had a distinct odor!
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