نتایج جستجو برای: 14 aryl 14h dibenzoxanthene

تعداد نتایج: 373509  

Journal: :Korean Journal of Horticultural Science & Technology 2021

The aims of this study were to analyze dynamic stem elongation standard cut-chrysanthemum (Dendranthema grandiflorum) with different photoperiod levels. Standard cv. Baekma was grown at a 16 hr until 23 days after planting, that photoperiods 8, 10, 12, 14, and (8H, 10H, 12H, 14H, 16H) applied using fluorescent lights in plant factory. long-day treatments 14H 16H produced no flower buds the 8H t...

Melamine trisulfonic acid (MTSA) is utilized as a highly efficient catalyst for the solvent-free condensation reaction of 2-naphthol (2 eq.) with arylaldehydes (1 eq.) under conventional thermal as well as microwave conditions to give the d

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم پایه 1388

به عنوان کاتالیزور برای سنتز ترکیبات 14- آریل –14h – دی بنزو [j,a] زانتن از واکنش تراکمی 2- نفتول با آلدهیدهای آروماتیک به کار می رود. آلدهیدهای آروماتیک مختلف در واکنش استفاده می شود که در همه موارد محصول با موفقیت ایجاد می شود. این روش نسبت به روش های دیگر دارای مزایای زیادی است که عبارتند از: راندمان بالا، زمان کوتاه واکنش و جداسازی آسان.

2012
Yong Bin Song Bo Liu

In the title compound, C(27)H(15)Br(2)ClO·C(3)H(7)NO, the xanthene moiety has a flattened boat conformation with a folding angle between the naphthalene units of 9.46 (3)°. The mean planes of the xanthene system and its 4-chloro-phenyl substituent are nearly perpendicular [dihedral angle = 89.43 (5)°]. The dimethyl-formamide solvent mol-ecule is disordered over two sets of sites with an occupan...

2015
Kyosuke Kishida Kaito Nagai Akihide Matsumoto Haruyuki Inui

The crystal structures of highly-ordered Mg-Zn-Y long-period stacking-ordered (LPSO) phases with the 18R, 14H and 10H-type stacking sequences have been investigated by atomic-resolution scanning transmission electron microscopy (STEM) and transmission electron microscopy (Kishida et al., 2015) [1]. This data article provides supporting materials for the crystal structure analysis based on the c...

Journal: :Vietnam Journal of Science and Technology 2021

A series of new quinazolione derivatives containing a conjugate sytem 13 a-l were synthesized via three step-procedure. The first step is the condensation 5-hydroxyanthranilic acid (10) at 160oC for 2 h to afford intermediate 11 in high yield. This was then reacted with n-butylamin acetic 14 give 12 92%. Finally, reaction different aldehydes 140oC 14h furnished conjugates 13a-l 62-81%. bioassay...

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