Optical rotatory properties and conformations of esters and polyesters of <i>trans</i>‐1,2‐cyclohexanedicarboxylic acid

Overberger, C. G.; Montaudo, Giorgio; Furuyama, Toshiuki; Goodman, Murray

doi:10.1002/polc.5070310106

Cited by 5 publications

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Preparation, characterization, and porperties of optically active poly(α‐methyl‐α‐ethyl‐β‐propiolactones)

Grenier¹,

Prud’homme²,

Leborgne³

et al. 1981

J. Polym. Sci. Polym. Chem. Ed.

View full text Add to dashboard Cite

S(−) and R(+) enantiomers of α‐methyl‐α‐ethyl‐β‐propiolactone (MEEPL) were prepared in an eight‐step synthesis with respective optical purities of 99 and 97% determined by 1H‐NMR (250 MHz) spectroscopy. Polymers (PMEPL) of different enatiomeric compositions were prepared with an anionic‐type initiator. Substantial differences in physical properties were observed between the racemic and optically pure polymers; for example, the melting point of the latter is 42°C higher than that of the former. Chiroptical properties of PMEPLs are reported. The 13C‐NMR (100.62 MHz) spectra of the polymers indicated that the distribution of configurational units in the macromolecular chain is random.

show abstract

Preparation, characterization, and porperties of optically active poly(α‐methyl‐α‐ethyl‐β‐propiolactones)

Grenier¹,

Prud’homme²,

Leborgne³

et al. 1981

J. Polym. Sci. Polym. Chem. Ed.

View full text Add to dashboard Cite

show abstract

The optical properties of chiral centers used as tools for studying irreversible or reversible reactions of synthetic polymers in solution

Vert

1973

J. polym. sci., C Polym. symp.

View full text Add to dashboard Cite

SYNOPSISThe optically active manifestations (ORD and CD) of asymmetric centers of synthetic macromolecules are discussed. Well known for conformational studies, they can also detect or give quantative information about the covalent or associative reactions of these polymers when important contributions of rigid or ordered structures are absent. The Moffitt equation can not only characterize the helical conformation of polypeptides but it is also, and in a more general manner, satisfied when at least one of the Cotton effects of sufficient amplitude contributing to the ORD of the polymer is of opposite sign to the other ones. Thew contributions are met in several cases which are classified and illustrated. An example is given where the bo constant of the Moffitt equation is used to determine the composition of a copolymer resulting from a chemical modification of some of the monomeric units of a polymer. The results are discussed. 1239 CE) 1973 bv John Wilev & Sons. Inc.

show abstract

General Methods of Synthesis of Optically Active Polymers

Merle-Aubry

1979

Optically Active Polymers

View full text Add to dashboard Cite

Optical rotatory properties and conformations of esters and polyesters of trans‐1,2‐cyclohexanedicarboxylic acid

Cited by 5 publications

References 25 publications

Preparation, characterization, and porperties of optically active poly(α‐methyl‐α‐ethyl‐β‐propiolactones)

Preparation, characterization, and porperties of optically active poly(α‐methyl‐α‐ethyl‐β‐propiolactones)

The optical properties of chiral centers used as tools for studying irreversible or reversible reactions of synthetic polymers in solution

General Methods of Synthesis of Optically Active Polymers

Contact Info

Product

Resources

About