共查询到20条相似文献,搜索用时 15 毫秒
1.
Observation of Diastereomeric Interconversions of β‐Sulfinylsubporphyrins as Evidence for Bowl Inversion 下载免费PDF全文
Kota Yoshida Prof. Dr. Atsuhiro Osuka 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(33):11727-11734
B‐Methoxy β‐(4‐methoxyphenylsulfinyl)subporphyrin and B‐phenyl β‐(4‐methoxyphenylsulfinyl)subporphyrin were synthesized by oxidation of the corresponding β‐sulfanylsubporphyrins with m‐chloroperbenzoic acid and were separated into diastereomers, respectively. B‐Methoxy subporphyrin diastereomers were interconverted to each other in methanol or ethanol, whereas such interconversion was not observed for B‐phenyl subporphyrin diastereomers even at high temperature. Diastereomeric interconversions of B‐methoxy subporphyrins were dramatically accelerated by addition of trifluoroacetic acid. These results suggest that the diastereomeric interconversions of B‐methoxy subporphyrins, namely, their bowl inversions, proceed via a mechanism involving protonation‐induced generation of subporphyrin borenium cations followed by nucleophilic attacks by alcohols. 相似文献
2.
3.
4.
5.
Inside Cover: Unusual Inversion Phenomenon of β‐Cyclodextrin Dimers in Water (Chem. Eur. J. 14/2011)
Dr. Stéphane Menuel Prof. Dr. Nathalie Azaroual Prof. Dr. David Landy Natacha Six Prof. Dr. Frédéric Hapiot Prof. Dr. Eric Monflier 《Chemistry (Weinheim an der Bergstrasse, Germany)》2011,17(14):3794-3794
6.
Inside Back Cover: Clickable 5′‐γ‐Ferrocenyl Adenosine Triphosphate Bioconjugates in Kinase‐Catalyzed Phosphorylations (Chem. Eur. J. 13/2015) 下载免费PDF全文
Dr. Nan Wang Dr. Zhe She Yen‐Chun Lin Prof. Sanela Martić Dr. David J. Mann Prof. Heinz‐Bernhard Kraatz 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(13):5255-5255
7.
Back Cover: Ultrasound‐Driven Secondary Self‐Assembly of Amphiphilic β‐Cyclodextrin Dimers (Chem. Eur. J. 13/2015) 下载免费PDF全文
Hai‐tao Zhang Prof. Dr. Xiao‐dong Fan Prof. Dr. Wei Tian Rong‐tian Suo Zhen Yang Yang Bai Wan‐bin Zhang 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(13):5256-5256
8.
9.
Back Cover: Induced Folding of Protein‐Sized Foldameric β‐Sandwich Models with Core β‐Amino Acid Residues (Chem. Eur. J. 16/2015) 下载免费PDF全文
Gábor Olajos Dr. Anasztázia Hetényi Dr. Edit Wéber Lukács J. Németh Dr. Zsolt Szakonyi Prof. Dr. Ferenc Fülöp Prof. Dr. Tamás A. Martinek 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(16):6304-6304
10.
11.
12.
13.
14.
《Chemistry (Weinheim an der Bergstrasse, Germany)》2010,16(36):10902-10902
15.
16.
17.
Inside Back Cover: Photoregulation of α‐Chymotrypsin Activity by Spiropyran‐Based Inhibitors in Solution and Attached to an Optical Fiber (Chem. Eur. J. 30/2015) 下载免费PDF全文
Xiaozhou Zhang Dr. Sabrina Heng Prof. Andrew. D. Abell 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(30):10915-10915
18.
19.