Photo Racemization and Polymerization of (R)-1,1 '-Bi(2-naphthol)


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/64295

Title:	Photo Racemization and Polymerization of (R)-1,1 '-Bi(2-naphthol)
Authors:	Zhang, Zhaoming Browse this author
	Wang, Yue Browse this author
	Nakano, Tamaki Browse this author →KAKEN DB
Keywords:	photo-polymerization
	racemization
	isomerization
	excited states
	reduction
	1,1 '-bi(2-naphthol)
Issue Date:	Nov-2016
Publisher:	MDPI
Journal Title:	Molecules
Volume:	21
Issue:	11
Start Page:	1541
Publisher DOI:	10.3390/molecules21111541
Abstract:	(R)-1,1'-Bi(2-naphthol) ((R)-BINOL) in an acetonitrile solution lost optical activity upon irradiation with an Hg-Xe lamp. HPLC resolution of the product indicated that (R)-BINOL was racemized upon irradiation, and SEC analysis suggested that a polymeric product was formed in the course of racemization. It is proposed that polymerization of BINOL can occur before it is racemized and that a unit in a polymer derived from BINOL may lose its optical activity afterwards due to in-chain racemization and/or reduction. The polymeric products seem to consist not only of BINOL residues but also of residues derived from acetonitrile as well as those derived through reduction of BINOL.
Rights:	https://creativecommons.org/licenses/by/4.0/
Type:	article
URI:	http://hdl.handle.net/2115/64295
Appears in Collections:	触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 中野環

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