Reference

Regioselective cyclodehydration of chiral diols with diethoxytriphenylphosphorane, triphenylphosphine-tetrachloromethane-potassium carbonate, and triphenylphosphine-diethyl azodicarboxylate reagents

Regioselective cyclodehydration of chiral diols with diethoxytriphenylphosphorane, triphenylphosphine-tetrachloromethane-potassium carbonate, and triphenylphosphine-diethyl azodicarboxylate reagents. A comparative study. Robinson, Philip L.; Barry, Carey N.; Bass, S. Woody; Jarvis, Susan E.; Evans, Slayton A., Jr. (William Rand Kenan, Jr., Lab. Chem., Univ. North Carolina, Chapel Hill, NC 27514, USA). 16088-62-3 and 18509-25-6 which are cas registry numbers are also used here. J. Org. Chem., 48(26), 5396-8 (English) 1983. CODEN: JOCEAH. ISSN: 0022-3263. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 22, 27 The regioselectivity of cyclodehydration of chiral diols was examd. with the reagents: Ph3P(OEt)2, PPh3-CCl4-K2CO3, and PPh3-EtO2CN:NCO2Et. (S)-(+)-Propane-1,2-diol and (R)-(-)-pentane-1,4-diol afford 80-87% retention of stereochem. at the chiral C in the ether while (S)-(+)-phenylethane-1,2-diol affords essentially racemic styrene oxide with all three reagents. .

The theory of vibrational optical activity

The theory of vibrational optical activity. Stephens, Philip J. (Dep. Chem., Univ. South. California, Los Angeles, CA 90089-0482, USA). Understanding Mol. Prop., Symp., Meeting Date 1986, 333-42. Edited by: Avery, John; Dahl, Jens Peder; Hansen, Aage E. Reidel: Dordrecht, Neth. (English) 1987. CODEN: 55UMAW.In this experiment, several chemicals are used like 16088-62-3 and 75156-31-9 DOCUMENT TYPE: Conference CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) A new theory of vibrational rotational strengths and its earliest applications to the prediction of vibrational CD spectra are described. .