منابع مشابه
Antarafacial-Antarafacial Cope Rearrangement
Thermal rearrangement of 2-thiabicyclo[ 3.2.0]hepta-3,6-diene-6,7-dicarbonitriles 1-3 to their 4,5-dicarbonitrile isomers 4-6 takes place at 110-140 "C in yields of 82-84%. The reactions are first order with rates almost independent of the polarity of the solvent. Activation parameters (m = 120-140 kJ mol-' and AS* = 0 J K-l mol-') are in agreement with a concerted symmetry-allowed antarafacial...
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BACKGROUND Non-specific low back pain (LBP) is usually self-limiting within 4-6 weeks. Longstanding pain and disability are not predictable from clinical signs or pathoanatomical findings. Pain cognition and physical performance have been shown to improve patients with chronic LBP following neurophysiological education. The primary aim of this study is to evaluate whether a specific cognitive b...
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Currently, more than 2.7 million American adults are diagnosed as obese each year. Many of these people suffer from a disorder known as metabolic syndrome, which includes symptoms like hypertension and elevated blood cholesterol. They are also at risk for developing additional diseases such as heart disease and diabetes mellitus. In fact, obesity may be a major cause of all these problems ... t...
متن کاملDiastereoselective diaza-Cope rearrangement reaction.
Steric effect is used to obtain a highly diastereoselective rearrangement reaction.
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ژورنال
عنوان ژورنال: American Journal of Sociology
سال: 1921
ISSN: 0002-9602,1537-5390
DOI: 10.1086/213286