Excess volumes of di-allyl ether+ hexafluorobenzene and di-benzyl ether + hexafluorobenzene

1978 ◽  
Vol 10 (7) ◽  
pp. 701-702 ◽  
Author(s):  
R.S. Murray ◽  
M.L. Martin
Keyword(s):  
Excess Volumes ◽  
Allyl Ether ◽  
Benzyl Ether

Visible Light-Mediated Oxidative Debenzylation

2020 ◽  
Author(s):  
Cristian Cavedon ◽  
Eric T. Sletten ◽  
Amiera Madani ◽  
Olaf Niemeyer ◽  
Peter H. Seeberger ◽  
...  
Keyword(s):  
Reaction Time ◽  
Visible Light ◽  
Functional Groups ◽  
Continuous Flow ◽  
Protecting Groups ◽  
Benzyl Ether ◽  
Complex Molecules ◽  
Protective Groups ◽  
Benzyl Ethers ◽  
Harsh Conditions

Protecting groups are key in the synthesis of complex molecules such as carbohydrates to distinguish functional groups of similar reactivity. The harsh conditions required to cleave stable benzyl ether protective groups are not compatible with many other protective and functional groups. The mild, visible light-mediated debenzylation disclosed here renders benzyl ethers orthogonal protective groups. Key to success is the use of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as stoichiometric or catalytic photooxidant such that benzyl ethers can be cleaved in the presence of azides, alkenes, and alkynes. The reaction time for this transformation can be reduced from hours to minutes in continuous flow. <br>

Excess volumes and refractive indices in the benzene-tert-amyl methyl ether and cyclohexane-tert-amyl methyl ether systems at 298.15 K

1987 ◽  
Vol 52 (12) ◽  
pp. 2839-2843 ◽  
Author(s):  
Jan Linek
Keyword(s):  
Methyl Ether ◽  
Excess Molar Volumes ◽  
Excess Volumes ◽  
Refractive Indices ◽  
Molar Volumes ◽  
Vibrating Tube Densimeter ◽  
Ether System

Excess molar volumes in the benzene-tert-amyl methyl ether and cyclohexane-tert-amyl methyl ether systems were measured by a vibrating-tube densimeter at 298.15 K and compared with the data for the methanol-tert-amyl methyl ether system determined previously. Besides, the refractive indices in both the systems were measured at the same temperature.

Excess volumes of (a polar liquid + an aromatic hydrocarbon) at the temperature 298.15 K

1995 ◽  
Vol 27 (12) ◽  
pp. 1349-1353 ◽  
Author(s):  
Wang Haijun ◽  
Su Zhongxing ◽  
Zhou Xiaoxian
Keyword(s):  
Aromatic Hydrocarbon ◽  
Excess Volumes ◽  
Polar Liquid

Excess enthalpies and excess volumes for (butane + butan-1-ol) at the temperatures (298.15, 323.15, and 348.15) K and pressures (5, 10, and 15) MPa

1994 ◽  
Vol 26 (12) ◽  
pp. 1275-1286 ◽  
Author(s):  
J.T. Sipowska ◽  
L.R. Lemon ◽  
J.B. Ott ◽  
P.R. Brown ◽  
B.G. Marchant
Keyword(s):  
Excess Volumes ◽  
Excess Enthalpies

ChemInform Abstract: EXCESS VOLUMES IN THE CRITICAL SOLUTION REGION

1982 ◽  
Vol 13 (7) ◽  
Author(s):  
T. E. BLOCK ◽  
N. F. JUDD ◽  
I. A. MCLURE ◽  
C. M. KNOBLER ◽  
R. L. SCOTT
Keyword(s):  
Excess Volumes ◽  
Solution Region

Excess volumes of binary mixtures of an alcohol + diethylketone

1976 ◽  
Vol 54 (16) ◽  
pp. 2676-2677 ◽  
Author(s):  
Kalluru S. Reddy ◽  
Murari Venkata P. Rao ◽  
Puligundla R. Naidu
Keyword(s):  
Binary Mixtures ◽  
Excess Volumes

Excess volumes of mixtures of 1-propanol +, 1-butanol +, 1-pentanol +, and 1-hexanol + diethylketone have been measured at 303.15 and 313.15 K. Of the four mixtures included here 1-propanol + diethylketone shows an inversion in sign in VE at 313.15 K. VE becomes more positive with increase in temperature.

scholarly journals Transition-metal-free allylation of 2-azaallyls with allyl ethers through polar and radical mechanisms

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Guogang Deng ◽  
Shengzu Duan ◽  
Jing Wang ◽  
Zhuo Chen ◽  
Tongqi Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Allyl Ether ◽  
Metal Catalyst ◽  
Metal Free ◽  
Allyl Ethers ◽  
Bond Forming ◽  
Allyl Halides ◽  
Synthetic Utility ◽  
Insight Into ◽  
Allyl Esters

AbstractAllylation of nucleophiles with highly reactive electrophiles like allyl halides can be conducted without metal catalysts. Less reactive electrophiles, such as allyl esters and carbonates, usually require a transition metal catalyst to facilitate the allylation. Herein, we report a unique transition-metal-free allylation strategy with allyl ether electrophiles. Reaction of a host of allyl ethers with 2-azaallyl anions delivers valuable homoallylic amine derivatives (up to 92%), which are significant in the pharmaceutical industry. Interestingly, no deprotonative isomerization or cyclization of the products were observed. The potential synthetic utility and ease of operation is demonstrated by a gram scale telescoped preparation of a homoallylic amine. In addition, mechanistic studies provide insight into these C(sp3)–C(sp3) bond-forming reactions.

A versatile iodo(iii)etherification of terminal ethynylsilanes using BF3–OiPr2 and alkyl benzyl ethers

2021 ◽  
Author(s):  
Takuya Matsumoto ◽  
Hiroshi Hagiyama ◽  
Kanetsugu Kuribayashi ◽  
Kazuhito Hioki ◽  
Hikaru Fujita ◽  
...  
Keyword(s):  
Benzyl Ether ◽  
Alkoxyl Group ◽  
Group Transfer ◽  
Benzyl Ethers

BF3–OiPr2 and alkyl benzyl ether combining system enables a chemoselective alkoxyl group transfer in the synthesis of (E)-α-silyl-β-alkoxyvinyl-λ3-iodanes.

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