نتایج جستجو برای: poly 4 methyl 1 pentane

تعداد نتایج: 3471085  

Journal: :Organic & biomolecular chemistry 2012
Santiago Díaz-Oltra Purificación Ruiz Eva Falomir Juan Murga Miguel Carda J Alberto Marco

Anti aldol reactions of an l-erythrulose derivative with several α-chiral aldehydes mediated by dicyclohexylboron chloride are examined. Good yields and stereoselectivities are observed. The results are best explained when the reactions are assumed to occur via boat-like transition states with minimization of 1,3-allylic strain and avoidance of syn pentane interactions.

Journal: :Acta Crystallographica Section E Structure Reports Online 2009

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

Journal: :Acta Crystallographica Section E Structure Reports Online 2012

Journal: :Molecules 2017
Igor Jerković Piotr M Kuś

A volatile profile of ramson (wild garlic, Allium ursinum L.) honey was investigated by headspace solid-phase microextraction (HS-SPME) and ultrasonic solvent extraction (USE) followed by gas chromatography and mass spectrometry (GC-FID/GC-MS) analyses. The headspace was dominated by linalool derivatives: cis- and trans-linalool oxides (25.3%; 9.2%), hotrienol (12.7%), and linalool (5.8%). Besi...

Journal: :Acta Crystallographica Section E Structure Reports Online 2012

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

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