Vinylene-Linked Covalent Organic Frameworks by Base-Catalyzed Aldol Condensation [PDF]
, 2019 Two 2D covalent organic frameworks (COFs) linked by vinylene (−CH=CH−) groups (V‐COF‐1 and V‐COF‐2) are synthesized by exploiting the electron deficient nature of the aromatic s‐triazine unit of C3‐symmetric 2,4,6‐trimethyl‐s‐triazine (TMT).
Acharjya, Amitava +4 more
core +1 more source
Sensitivity of Antarctic Urospora penicilliformis (Ulotrichales, Chlorophyta) to ultraviolet radiation is life stage dependent [PDF]
, 2009 The sensitivity of different life stages of the eulittoral green alga Urospora penicilliformis (Roth) Aresch. to ultraviolet radiation (UVR) was examinedin the laboratory.
Campana, G. +5 more
core +1 more source
The Effects of Ultraviolet Light on Anthocyanin Accumulation in the Adventitious Roots of Sedum wrightii (Crassulaceae) [PDF]
, 2018 Several studies have supported the idea that anthocyanin accumulation may be a possible protection mechanism in plants against DNA damage caused by ultraviolet radiation (UV).
Gravatt, Dennis A. +2 more
core +2 more sources
Synthesis and structure of 2,4,6-tricyclobutyl-1,3,5-trioxane
Acta Crystallographica Section E: Crystallographic Communications, 2019 The synthesis and structure of 2,4,6,-tricyclobutyl-1,3,5-trioxane, C15H24O3 1, is described. It was formed in 39% yield during the work-up of the Swern oxidation of cyclobutylmethanol and may serve as a stable precursor of the cyclobutane carbaldehyde ...
Sergey V. Shorunov +3 more
doaj +1 more source
cis,trans,cis-1,2,3,4-Tetrakis[2-(ethylsulfanyl)phenyl]cyclobutane
IUCrData, 2016 The title cyclobutane derivative, C36H40S4, formed serendipitously through a photochemically initiated [2 + 2] cycloaddition. The asymmetric unit contains half a molecule with the 2-(ethylsulfanyl)phenyl substituents in a cis configuration, the other ...
Barbara Sohr +4 more
doaj +1 more source
Molecules, 2021 The formation of a pair of extended networks sustained by halogen bonds based upon two regioisomers of a photoproduct, namely rctt-1,3-bis(4-pyridyl)-2,4-bis(phenyl)cyclobutane (ht-PP) and rctt-1,2-bis(4-pyridyl)-3,4-bis(phenyl)cyclobutane (hh-PP), that ...
Taylor J. Dunning +3 more
doaj +1 more source
Chemical investigation of light induced DNA bipyrimidine damage and repair [PDF]
, 2011 In all organisms, genetic information is stored in DNA and RNA. Both of these macromolecules are damaged by many exogenous and endogenous events, with UV irradiation being one of the major sources of damage.
Carell, Thomas +2 more
core +1 more source
(Poly)Borylated Species as Modern Reactive Groups toward Unusual Synthetic Applications
Angewandte Chemie, EarlyView.In this review, we spotlight recent breakthroughs in α‐polyboron‐substituted carbon‐centered intermediates (carbanion, carbocation, radical, and carbene) and polyborylated alkenes. By bridging fundamental reactivity with the application potential of these extraordinary species, we hope this review will serve as a roadmap for harnessing these unique ...
Nadim Eghbarieh +5 more
wiley +2 more sources
[3,4-Bis(2,3-dichlorophenyl)cyclobutane-1,2-diyl]bis(furan-2-ylmethanone) monohydrate
IUCrData, 2017 In the title hydrate, C26H16Cl4O4·H2O, the cyclobutane ring carries two 2,3-dichlorophenyl and two furan-2-ylmethanone substituents. It subtends dihedral angles of 86.6 (3) and 37.3 (3)° with the furan rings and 77.0 (5) and 77.0 (3)° with the ...
N. Renuka +5 more
doaj +1 more source
Methodology-driven efficient synthesis of cytotoxic (±)-piperarborenine B
Green Synthesis and Catalysis, 2022 The evolution of synthetic design toward the efficient synthesis of cyclobutane natural product (±)-piperarborenine B is demonstrated. Taking the advantages of good functional group compatibility of contractive synthesis of cyclobutanes from pyrrolidines,
Chunngai Hui, Andrey P. Antonchick
doaj +1 more source