New spiropyrans based on 1,3-benzoxazine-2-one: acid catalyzed synthesis and theoretical insight into the photochromic activity
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- 作者：Ilya V. Ozhogina ; iozhogin@sfedu.ru" class="auth_mail" title="E-mail the corresponding author ; lab811@ipoc.sfedu.ru" class="auth_mail" title="E-mail the corresponding author ; Igor V. Dorogana ; Boris S. Lukyanova ; Eugene L. Mukhanova ; Valery V. Tkachevb ; Anatoly V. Chernysheva ; Maria B. Lukyanovaa ; Sergey M. Aldoshinb ; Vladimir I. Minkina
- 关键词：Spiropyran ; 1 ; 3-Benzoxazine ; Photochromism ; Acid catalyzed synthesis ; DFT calculations
- 刊名：Tetrahedron Letters
- 出版年：2016
- 出版时间：1 June 2016
- 年：2016
- 卷：57
- 期：22
- 页码：2382-2385
- 全文大小：951 K
文摘
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[MeC(OH)2]+ClO4− is a good catalyst for the synthesis of 1,3-benzoxazine spiropyrans.
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Rotation of the nitro-group is involved in the main relaxation channel on the S1 PES.
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Excited-state structural relaxation determines photochromism of spiropyrans.