775. Alkyl–oxygen fission in carboxylic esters. Part XVI. Influence of the ethoxyl group on the reactivity of 4-ethoxydiphenylmethanol

1963 ◽  
Vol 0 (0) ◽  
pp. 4084-4087 ◽  
Author(s):  
J. Kenyon ◽  
P. R. Sharan
Keyword(s):  
Ethoxyl Group ◽  
Carboxylic Esters

17O and 13C NMR spectra of some geminal diacetates

1988 ◽  
Vol 53 (3) ◽  
pp. 588-592 ◽  
Author(s):  
Antonín Lyčka ◽  
Josef Jirman ◽  
Jaroslav Holeček
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
The Other ◽  
13C Nmr Spectra ◽  
Other Hand ◽  
Carboxylic Esters ◽  
C Nmr ◽  
Oxygen Atoms

The 17O and 13C NMR spectra of eight geminal diacetates RCH(O(CO)CH3)2 derived from simple aldehydes have been measured. In contrast to the dicarboxylates R1R2E(O(CO)R3)2, where E = Si, Ge, or Sn, whose 17O NMR spectra only contain a single signal, and, on the other hand, in accordance with organic carboxylic esters, the 17O NMR spectra of the compound group studied always exhibit two well-resolved signals with the chemical shifts δ(17O) in the regions of 183-219 ppm and 369-381 ppm for the oxygen atoms in the groups C-O and C=O, respectively.

Carbene-Catalyzed Alkylation of Carboxylic Esters via Direct Photoexcitation of Acyl Azolium Intermediates

ACS Catalysis ◽  
2021 ◽  
pp. 2925-2934
Author(s):  
Shi-Chao Ren ◽  
Wen-Xin Lv ◽  
Xing Yang ◽  
Jia-Lei Yan ◽  
Jun Xu ◽  
...  
Keyword(s):  
Carboxylic Esters

scholarly journals Carboxylic Ester Hydrolases in Bacteria: Active Site, Structure, Function and Application

Crystals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 597 ◽  
Author(s):  
Changsuk Oh ◽  
T. Doohun Kim ◽  
Kyeong Kyu Kim
Keyword(s):  
Acyl Chain ◽  
Data Bank ◽  
Industrial Applications ◽  
Head Group ◽  
Carboxylic Ester ◽  
Site Structure ◽  
Domains Of Life ◽  
Carboxylic Esters ◽  
Hydrolysis Of ◽  
Ester Hydrolases

Carboxylic ester hydrolases (CEHs), which catalyze the hydrolysis of carboxylic esters to produce alcohol and acid, are identified in three domains of life. In the Protein Data Bank (PDB), 136 crystal structures of bacterial CEHs (424 PDB codes) from 52 genera and metagenome have been reported. In this review, we categorize these structures based on catalytic machinery, structure and substrate specificity to provide a comprehensive understanding of the bacterial CEHs. CEHs use Ser, Asp or water as a nucleophile to drive diverse catalytic machinery. The α/β/α sandwich architecture is most frequently found in CEHs, but 3-solenoid, β-barrel, up-down bundle, α/β/β/α 4-layer sandwich, 6 or 7 propeller and α/β barrel architectures are also found in these CEHs. Most are substrate-specific to various esters with types of head group and lengths of the acyl chain, but some CEHs exhibit peptidase or lactamase activities. CEHs are widely used in industrial applications, and are the objects of research in structure- or mutation-based protein engineering. Structural studies of CEHs are still necessary for understanding their biological roles, identifying their structure-based functions and structure-based engineering and their potential industrial applications.

Efficient Access to Chiral β‐Borylated Carboxylic Esters via Rh‐Catalyzed Hydrogenation

2019 ◽  
Vol 361 (12) ◽  
pp. 2844-2848 ◽  
Author(s):  
Gang Liu ◽  
Anqi Li ◽  
Xueyuan Qin ◽  
Zhengyu Han ◽  
Xiu‐Qin Dong ◽  
...  
Keyword(s):  
Efficient Access ◽  
Carboxylic Esters

ChemInform Abstract: Novel Reaction: Decarboxylative Ramberg-Baecklund Rearrangement in Some α-Isopropyl Sulfonyl Carboxylic Esters.

ChemInform ◽  
2010 ◽  
Vol 27 (10) ◽  
pp. no-no
Author(s):  
B. WLADISLAW ◽  
L. MARZORATI ◽  
V. F. TORRES RUSSO ◽  
M. H. ZAIM ◽  
C. DI VITTA
Keyword(s):  
Carboxylic Esters

ChemInform Abstract: SOME REACTIONS OF CARBENOIDS WITH CHROMONE-2-CARBOXYLIC ESTERS

1984 ◽  
Vol 15 (30) ◽  
Author(s):  
I. D. DICKER ◽  
J. SHIPMAN ◽  
J. L. SUSCHITZKY
Keyword(s):  
Carboxylic Esters
Sign in / Sign up

Export Citation Format

Share Document