Results 101 to 110 of about 11,791 (282)

SPIRO-COMPOUNDS. PART V. THE FORMATION AND TRANSFORMATION OF SPIRO-COMPOUNDS FROM 3-AND 2-METHYLCYCLOHEXANONES.

, 1938
Spiro-compounds have been built up from methylcyclohexanone to examine, on the basis of the valency deflexion hypothesis, the nature of strain in cyclohexane ring in which ortho or meta positions are occupied by groups. β-Methylnaphthalene has been obtained as a product of dehydrogenation of 3-methylcyclohexane-spiro-cyclopmtane-­5'-carboxylic acid.
NRIPENDRA NATH CHATTERJEE, GIRINDRA NATH BARPUJARI   +1 more
openaire   +1 more source

Data‐Driven Design of Scalable Perovskite Film Fabrication via Machine Learning–Guided Processing

Carbon Energy, EarlyView.
Considering complex process parameters and poor reproducibility in perovskite thin film fabrication, this study uses machine learning to analyze and predict high‐dimensional process variables. The Random Forest model, identified as the most effective, can effectively analyze and rapidly predict optimal process parameters from extensive data.
Hong Liu, Kangyan Liu, Biao Zhang, Ziang Chen, Yi Yang, Qiang Sun, Tao Ye, Bed Poudel, Kai Wang, Congcong Wu   +9 more
wiley   +1 more source

Synthesis, toxicological and in silico evaluation of novel spiro pyrimidines against Culex pipiens L. referring to chitinase enzyme

Scientific Reports
The exponential development of resistance to conventional chemical insecticides adds another important motive for the creation of novel insecticidal active agents.
Eslam M. Abbass, Ali Khalil Ali, Ahmed F. El-Farargy, Doaa R. Abdel-Haleem, Safaa S. Shaban   +4 more
doaj   +1 more source

Synthesis of Some New Spiro Heterocyclic Nitrogen Compounds, II [PDF]

, 1978
KH. M. HASSAN, A. K. EL‐SHAFEI, Hussein El‐Kashef   +2 more
openalex   +1 more source

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

Spiro[pyrrolidine-3, 3´-oxindole] as potent anti-breast cancer compounds: Their design, synthesis, biological evaluation and cellular target identification [PDF]

, 2016
Santanu Hati, Sayantan Tripathy, Pratip Kumar Dutta, Rahul Agarwal, Ramprasad Srinivasan, Ashutosh Singh, Shailja Singh, Subhabrata Sen   +7 more
openalex   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

Chemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve, Mariana Gomes Manso, Tibo Van Eeckhoorn, Mark E. Light, Bruno Linclau   +4 more
wiley   +1 more source

Quantum Chemical and Experimental Studies on the Mechanism of Alkylation of β-Dicarbonyl Compounds. The Synthesis of Five and Six Membered Heterocyclic Spiro Derivatives [PDF]

, 2004
Nurettin Sadikov, Sahin Nasibov, Cemi̇l Öğretır, Halil Berber, Ali Hüseyinli   +4 more
openalex   +1 more source

Identification of Natural Isonitriles Through Ligation to an Azomethine Imine Probe

Chemistry – A European Journal, EarlyView.
The azomethine imine (AMI)–isonitrile (NC) ligation allowed for the chemoselective detection of natural isonitriles in bacteria and fungi. The reactivity‐based screening establishes a new stereogenic center, thereby allowing for facile distinction between chiral and achiral isonitriles. The work also unraveled a unique reactivity of isonitriles bearing
Maurice P. Biedermann, Alexander Brachmann, Shurui Mai, Athanasios Markos, Markus Künzler, Jörn Piel, Helma Wennemers   +6 more
wiley   +1 more source

An efficient in situ reduction and cyclization reaction for synthesis of spiro compound derivatives in Fe–H₂O–AcOH medium from nitro compounds [PDF]

, 2018
Hui Xu, Zhengbing Pan, Lei Dai, Kaimin Mao, Liangce Rong   +4 more
openalex   +1 more source