Optical rotatory dispersion and circular dichroism. Part LXVI. 2-Halogenoalkanes

Chaudri, B. A.; Goodwin, David G.; Hudson, H. R.; Bartlett, L.; Scopes, P. M.

doi:10.1039/j39700001329

Cited by 6 publications

(3 citation statements)

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“…In view of our results, the highest optical rotation reported for 3k , [α] D = −31.6 (MeOH), does not correspond to optically pure chloride. Assuming full inversion in our reaction its value should be equal to [α] D = 36.25 (MeOH).…”

Section: Referencescontrasting

confidence: 59%

Triphenylphosphine/Dichloroselenurane: A New Reagent for a Selective Conversion of Alcohols into Alkyl Chlorides

1998

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Section: Referencescontrasting

confidence: 59%

Triphenylphosphine/Dichloroselenurane: A New Reagent for a Selective Conversion of Alcohols into Alkyl Chlorides

1998

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“…The situation differs, however, when the oxy chromophore is attached to the side chain carbon 20, in which case the epimeric diols occurs at a lower wavelength than that of bromine. 35 The bathochromic shift in the uv absorption of the dioxolanes compared to that of alkyl halides35 can be explained in terms of electronic or dipole-dipole interactions between the halogen and the ring oxygen atoms.…”

Section: Resultsmentioning

confidence: 99%

Chiroptical properties of cyclic esters and ketals derived from (S)-1,2-propylene glycol and (S,S)- and (R,R)-2,3-butylene glycol

Usieli¹,

Pilersdorf²,

Shor³

et al. 1974

J. Org. Chem.

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The optically pure five-membered ring thionocarbonates (la-3a), carbonates (lb-3b), sulfites (cis-and transió, 2c, 3c), phosphite (2d), and 2-bromoand 2-chloromethyl-1,3-dioxolanes (cis-and irons-le, 2e, 2f) were prepared from the three title diols by standard methods and their uv and CD spectra were measured in various solvents over the range 185-400 mg at room temperature. The CD spectra of la-3a display two well-defined Cotton effects of opposite signs and of diverse intensities centered at 222-235 and 325 mg, related to the uv ir -* * and n -* * transitions, respectively. The sign of the long-wavelength Cotton effect is associated with the chirality of the heterocycle ring. A positive ellipticity for the n -*• ir* transition is assigned to thionocarbonates

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“…das geeignetste Mittel zur Konfigurationszuordnung in dieser Verbindungsklasse dar. Kiirzlich haben Cookson & Coxon[15] die CD.-Werte einer Reihe von Steroidjodiden beschrieben und diese aufgrund des von Scopes et al[16] postulierten Zu-Tabelle 1. Circulardichroismus und UV.-Spektren von 17-Jod-androstanen…”

unclassified

Reaktionen von Steroid‐Hypojoditen X. Fragmentierung von 20‐Hydroxy‐Steroiden (17‐Jod‐androstane). Über Steroide, 226. Mitteilung

Biollaz

Kalvoda

1972

Helvetica Chimica Acta

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Optical rotatory dispersion and circular dichroism. Part LXVI. 2-Halogenoalkanes

Cited by 6 publications

References 0 publications

Triphenylphosphine/Dichloroselenurane: A New Reagent for a Selective Conversion of Alcohols into Alkyl Chlorides

Triphenylphosphine/Dichloroselenurane: A New Reagent for a Selective Conversion of Alcohols into Alkyl Chlorides

Chiroptical properties of cyclic esters and ketals derived from (S)-1,2-propylene glycol and (S,S)- and (R,R)-2,3-butylene glycol

Reaktionen von Steroid‐Hypojoditen X. Fragmentierung von 20‐Hydroxy‐Steroiden (17‐Jod‐androstane). Über Steroide, 226. Mitteilung

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