Search
نمایش تعداد 1-10 از 26
A New Versatile Route to the Synthesis of Novel Highly Substituted Series of 1,1´-Carbonyl-bispyrazole Derivatives
The reaction of 1H-pyrazole-1-carbohydrazide, as a new precursor, with various α,β-unsaturated nitriles under suitable conditions leads to cyclocondensation reaction, thereby providing a novel route for the synthesis of a ...
Selective monotetrahydropyranylation of symmetrical diols using P2O5/SiO2 under solvent-free conditions and their depyranylation
Selective monotetrahydropyranylation of symmetrical diols using P2O5/SiO2 under solvent-free conditions and their depyranylation
Fe(HSO4)3 as an inexpensive, eco-friendly, heterogeneous and reusable catalyst for acetal/ketal formation and their facile regeneration
Fe(HSO4)3 as an inexpensive, eco-friendly, heterogeneous and reusable catalyst for acetal/ketal formation and their facile regeneration
A Simple and Fast Mthod for Translate a Fischer Projection to Newman or Angular Line Representation
Difficulty for undergraduate students taking a basic organic chemistry course arises when they
have to understand the relationship between the different molecular representations, for example,
between Fischer ...
طراحی فعالیت های عملی آزمایشگاهی کم هزینه در درس شیمی و زندگی
فعالیت های عملی آزمایشگاهی،نقش مؤثری در یادگیری عمیق و پایدار دانش آموز داشته، بطوریکهه عههوه بهر
ایجاد انگیزش در دانش آموزان، آنها را با مراحل اکتشاف علم و روش علمی آشنا می کنهد اها مطالها را از نهو
کشف و ...
Synthesis of new derivatives of 2-Substitueted 4-(4-methyl-12Hpyrimido[4,5:5,6][1,4]thiazino[2,3-b]quinoxalin-2-yl)
Nitrogen-containing heterocycles are undoubtedly one of the most important targets in organic chemistry. They are widely distributed in natural products and in pharmaceutical agents, and numerous studies for their chemistry ...
استناد به آیات قرآن در تدریس شیمی
آموزش علوم در فضایی آمیخته با قرآن موجبات انس بیش از پیش نسل آینده با این کتاا هادایتگر را فاراه
خواهد ساخت. با توجه به تاکید قرآن کری به تحقیق و تفحص در جهان هستی، شناخت جهان و مالک اصالی
آن، خداوند متعال، ...
Synthesis of some novel 1,3,4-thiadiazine containing tetrazolonucleus
1,3,4-Thiadiazines represent the most widely studied class of compounds among the six
theoretically possible thiadiazine isomers; they are of interest in a chemical sense because they are labile compounds which are ...
شیمی آلی و اهمیت تدریس گسترده آن در کتب دبیرستان
شیمی آلی امروزه به صورت گسترده ای در زمینه مواد غذائی داروها پوشاا وارد زنادگ ی بشار شاده اسا .
تاکنون بیش از 22 میلیون ترکیب آلی شناخته یا سنتز شده اسا . بیشاتر ین واحاد هاا ی درسا ی شا یمی در
دانشگاه ها در ...
Synthesis of new heterocyclic compounds based on Pyrazolo[3,4-d]pyrimidine derivatives
Pyrazole and fused heterocyclic pyrazole derivatives constute an interesting class of heterocycles due to their synthetic versatility and effective biological activities [1-2]. Pyrazolo[3,4-d]pyrimidinederivatives have ...