نتایج جستجو برای: benzyl alcohol

تعداد نتایج: 123691  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

هتروپلی اسیدهای نوع کگینی به صورت های توده ای و نمکی و ساپورت به خاطر خصلت اسید برونشتدی قوی، انجام انتقالات چند الکترونی سریع برگشت پذیر تحت شرایط معتدل و غیره به طور وسیعی مورد بررسی قرار گرفته اند. استفاده از تانو کاتالیزورها بعنوان یک روش مفید برای پیشرفت بازده کاتالیزورهای هتروژن در یک رنج گسترده از تبدیلات سنتزی توجه زیادی را به خود جلب کرده است. نانو سیلیکا تهیه شده از پوسته برنج ( که یک...

2015
Rahhal El Ajlaoui El Mostapha Rakib Souad Mojahidi Mohamed Saadi Lahcen El Ammari

In the title compound, C13H10ClNOS2, the dihedral angle between the rhodanine (r.m.s. deviation = 0.008 Å) and 4-chloro-benzyl-idene rings is 1.79 (11)°. The allyl group attached to the N atom, which lies almost perpendicular to the rhodanine ring, is disordered over two orientations in a 0.519 (13):0.481 (13) ratio. A short intra-molecular C-H⋯S inter-action closes an S(6) ring. In the crystal...

2017
Stefan van der Vorm Herman S Overkleeft Gijsbert A van der Marel Jeroen D C Codée

Glycosylations of 4,6-tethered glucosazide donors with a panel of model acceptors revealed the effect of acceptor nucleophilicity on the stereoselectivity of these donors. The differences in reactivity among the donors were evaluated in competitive glycosylation reactions, and their relative reactivities were found to be reflected in the stereoselectivity in glycosylations with a set of fluorin...

Journal: :Journal of the American Chemical Society 2009
Jie Fan Yihu Dai Yunlong Li Nanfeng Zheng Junfang Guo Xiaoqing Yan Galen D Stucky

A newly developed mesoporous mixed metal oxide (K-Cu-TiO(2)) catalyst is capable of highly selective, gas-phase benzyl alcoholbenzaldehyde transformation at excellent yields (>99%) under surprisingly low temperatures (203 degrees C, bp of benzyl alcohol). The low-temperature reaction conditions and integration of K and Cu(I) components into the TiO(2) matrix are of vital importance for the stab...

Journal: :Angewandte Chemie 2009
Zachary A Buchan Scott J Bader John Montgomery

Gettin' a little sugar-no alcohol required: A procedure for the direct glycosylation of ketones without a hydroxy intermediate enables the site-selective glycosylation of hydroxyketones at the ketone or the alcohol functionality without the use of protecting groups on the aglycone (see scheme). Site selectivity is controlled by the catalyst structure in hydrosilylation and dehydrogenative silyl...

2013
Alfredo Ghezzi Harish R. Krishnan Linda Lew Francisco J. Prado Darryl S. Ong Nigel S. Atkinson

Sustained or repeated exposure to sedating drugs, such as alcohol, triggers homeostatic adaptations in the brain that lead to the development of drug tolerance and dependence. These adaptations involve long-term changes in the transcription of drug-responsive genes as well as an epigenetic restructuring of chromosomal regions that is thought to signal and maintain the altered transcriptional st...

Journal: :Agricultural and Biological Chemistry 1988

Journal: :Bulletin of The Japan Petroleum Institute 1972

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