Results 61 to 70 of about 104,452 (192)

Quantitative determination of the nucleophilicity of allylsilanes [PDF]

, 1989
Kinetic investigations on the reactivity of allylsilanes (1a–o) towards the p-methoxy substituted diphenylcarbenium ion (2) are ...
Hagen, Gisela, Mayr, Herbert
core   +1 more source

Photochemical production and loss rates of ozone at Sable Island, Nova Scotia during the North Atlantic Regional Experiment (NARE) 1993 summer intensive [PDF]

, 1998
Three weeks of summertime surface‐based chemical and meteorological observations at Sable Island, Nova Scotia during the North Atlantic Regional Experiment (NARE) 1993 summer intensive are used to study instantaneous photochemical production and loss ...
Albercook, G. M., Blake, Donald R., Blake, N. J., Carroll, M. A., Duderstadt, Katharine A., Fehsenfeld, F. C., Feng, L., Forbes, G., Holloway, J. S., Parrish, D. D., Sillman, S., Wang, T.   +11 more
core   +3 more sources

Ozone and alkyl nitrate formation from the Deepwater Horizon oil spill atmospheric emissions [PDF]

, 2012
Ozone (O3), alkyl nitrates (RONO2), and other photochemical products were formed in the atmosphere downwind from the Deepwater Horizon (DWH) oil spill by photochemical reactions of evaporating hydrocarbons with NOx (=NO+NO2) emissions from spill response
Aikin, KC, Atlas, EL, Blake, DR, Holloway, JS, Meinardi, S, Neuman, JA, Nowak, JB, Parrish, DD, Peischl, J, Perring, AE, Pollack, IB, Roberts, JM, Ryerson, TB, Trainer, M   +13 more
core   +1 more source

Unified metal-free intermolecular Heck-type sulfonylation, cyanation, amination, amidation of alkenes by thianthrenation

Nature Communications
Direct and site-selective C-H functionalization of alkenes under environmentally benign conditions represents a useful and attractive yet challenging transformation to access value-added molecules.
Ming-Shang Liu, Hai-Wu Du, Huan Meng, Ying Xie, Wei Shu   +4 more
doaj   +1 more source

The co-pyrolysis of flame retarded high impact polystyrene and polyolefins [PDF]

, 2007
The co-pyrolysis of brominated high impact polystyrene (Br-HIPS) with polyolefins using a fixed bed reactor has been investigated, in particular, the effect that different types brominated aryl compounds and antimony trioxide have on the pyrolysis ...
Bhaskar, T., Hall, W.J., Mitan, N., Muto, A., Sakata, Y., Williams, P.T.   +5 more
core   +1 more source

Effect of polarity and steric on the rate addition of free radicals to Alkenes [PDF]

Kirkuk Journal of Science, 2009
In this investigation, the effective factors on the addition rate for hydroxy methyl and cynomethyl free radicals to some alkenes have been studied using quantum mechanics methods. Where in this study, physical properties like the electron density on the
Najla.J. Khalil, Mostafa.R. Aeyd
doaj   +1 more source

Triaminoalkenes Derived from Cyclic (Alkyl)(amino)carbenes with a 1,1′‐Ferrocenylene Backbone and N‐Heterocyclic Carbenes: fcCAAC–NHC Heterodimers

ChemistryOpen
The study addresses triaminoalkenes derived from [3]ferrocenophane‐type cyclic (alkyl)(amino)carbenes (fcCAACs) fc(CPh2CNR) (fc = 1,1′‐ferrocenylene) and N‐heterocyclic carbenes (NHCs). Stable target compounds are obtained in good yields as crystalline
Suman Yadav, Clemens Bruhn, Clemens Lücke, Richard Rudolf, Tabea Pfister, Biprajit Sarkar, Ulrich Siemeling   +6 more
doaj   +1 more source

Ozone production in four major cities of China: sensitivity to ozone precursors and heterogeneous processes [PDF]

, 2013
. Despite a large volume of research over a number of years, our understandings of the key precursors that control tropospheric ozone production and the impacts of heterogeneous processes remain incomplete. In this study, we analyze measurements of ozone
Blake, DR, Ding, AJ, Fan, SJ, Gao, J, Saunders, SM, Wang, T, Wang, WX, Wang, XF, Xue, LK, Zhang, QZ, Zhou, XH, Zuo, HC   +11 more
core  

The Azidofunctionalization of Alkenes

ChemistryEurope
The azidofunctionalization of alkenes has emerged as a powerful difunctionalization strategy, expanding the toolbox of synthetic chemistry. This transformation enables the simultaneous installation of an azide and a second functional group onto an alkene,
Pierre Palamini, Jerome Waser
doaj   +1 more source

Air quality in Mecca and surrounding holy places in Saudi Arabia during Hajj: initial survey. [PDF]

, 2014
The Arabian Peninsula experiences severe air pollution, the extent and sources of which are poorly documented. Each year in Saudi Arabia this situation is intensified during Hajj, the Holy Pilgrimage of Islam that draws millions of pilgrims to Mecca.
Aburizaiza, Omar S, Barletta, Barbara, Blake, Donald R, Blake, Nicola J, Gartner, Aaron, Khwaja, Haider, Meinardi, Simone, Siddique, Azhar, Simpson, Isobel J, Zeb, Jahan   +9 more
core   +2 more sources