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

Zhang, Zhaoming; Wang, Yue; Nakano, Tamaki

Molecules, 2016, 21(11), 1541

Permalink : https://hdl.handle.net/2115/64295

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アクセス権	open access
URI	https://hdl.handle.net/2115/64295
タイトル	Photo Racemization and Polymerization of (R)-1,1 '-Bi(2-naphthol)
著者	Zhang, Zhaoming ; Wang, Yue ; Nakano, Tamaki
著者名 Zhang, Zhaoming
著者名 Wang, Yue
e-Rad_Researcher 40227856 著者名 Nakano, Tamaki
言語	英語
キーワード	photo-polymerization
	racemization
	isomerization
	excited states
	reduction
	1,1 '-bi(2-naphthol)
発行日	2016-11
出版者	MDPI
収録物名	Molecules
巻(号)	21(11)
ページ	1541
抄録	(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.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
PISSN	1420-3049
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/molecules21111541