Asch power point

In recent investigation for 1-phenyl naphthalene has been synthesis via friedel craft acylation and Perkin-Oglialoro reaction followed by cyclization reaction. The key precursor use for synthesis of foresaid product by β-benzoyl propionic acid (β-BPA) through friedel craft acetylating reaction by mixture of succinic anhydride, benzene and its derivative with zeolite at streamline time to obtain blended accumulation followed by work-up with cold acid-water (1:1) treatment. The obtaining accumulation on distillation to eliminate benzene liquor and obtained crude mass. It dissolve in aqueous solution of sodium carbonate (1:10) and acidification by hydrochloric acid to form crude -benzoyl propionic acid (-BPA) and their derivatives. In perkin acid synthesize by two steps in which butenolides are prepared by ß-BPA and aryl aldehyde using weak base catalyst pyridine and followed by cleavage of lactone ring methanolic base hydrolysis to form perkin acid. The perkin acid undergoes cyclization using zeolite gives 1-phenyl naphthalene. The similar contexts the 1-phenyl naphthalene derivatives are extracted from medicinal plant i.e., Cleistanthus collinus and isolated by column chromatography. These entire compounds are determined by UV-Visible spectrophotometry.

Organic Magnetic Resonance, 1981

2017

In medicinal chemistry, the study of lignan is significant due to their respective nature. The lignan has obtained much more active molecule yet 1-phenyl naphthalene and its derivative has various number physiological activities. For extraction and isolation, various separation methods are designed on the basis of organic solvent and soxhlet extractor. On recent study the requirement of drogue in bulk extent so that’s why we keep designing the number of methods for synthesis of lignan i.e. 1-phenyl naphthalene and their derivatives. The naturally occurring compound shows multiple activity and side effects due to the conventional synthetic methods of lignans are developed. Those isolated and synthesized lignan derivatives are studied for physiological activity, in which 1-phenyl naphthalene and their derivatives show magnificent result towards activity.

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2011

Canadian Journal of Chemistry, 1986

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2011

In this review paper we have information about determination of organic compounds , techniques of characterization ,analysis of peaks and frequency , applications of spectroscopic techniques through explanation of figures.

The synthesis of a new hydrazone, 2-oxoacenaphthylen-1(2H)-ylidene nicotino-hydrazide, and its structural and spectroscopic characterization is reported. The obtained powder was recrystallized from dmso and ethanol that afforded small crystals used for single-crystal X-ray diffraction studies. The compound was found to crystallize in two polymorphs, depending on the crystallization conditions. One of the polymorphs (form I) crystallizes in the centrosymmetric P2 1 /c monoclinic space group, the other (form II) crystallizes in the non-centrosymmetric, but achiral, orthorhombic space group P2 1 2 1 2 1. Conformation of the molecules is similar in both polymorphs, but the network of weak intermolecular interactions determining the crystal packing is different. In form II an additional C−H···O bond connects molecules related by the screw-axis running parallel to the a-axis. Crystals of both polymorphs were also screened by FT-IR and Raman microscopy; a detailed analysis of the spectra and comparison with those of the isolated molecule calculated by ab-initio HF/MP2 and DFT/B3LYP methods using a correlation consistent cc-pVDZ basis set is presented. In addition, UV-vis and NMR studies were performed in solution.

Acta crystallographica. Section E, Crystallographic communications, 2017

In the title 1-oxo-1,2-di-hydro-naphthalene derivatives, C28H24O6, (I), C34H22O5S, (II), and C27H20O3S2, (III), the cyclo-hexa-1,3-diene rings of the 1,2-di-hydro-naphthalene ring systems adopt half-chair, boat and half-chair conformations, respectively. The carbonyl O atoms attached to the di-hydro-naphthalene ring systems are each significantly deviated from the mean plane of the 1,2-di-hydro-naphthalene ring system, by 0.6162 (12) Å in (I), 0.6016 (16) Å in (II) and 0.515 (3) Å in (III). The mean planes of the 1,2-di-hydro-naphthalene ring systems make dihedral angles of 85.83 (3), 88.19 (3) and 81.67 (8)°, respectively, with the methyl-phenyl ring in (I), the pyrene ring in (II) and the phenyl ring in (III). In (I), the mol-ecular structure is stabilized by an intra-molecular C-H⋯O hydrogen bond, generating an S(6) ring motif. In the crystal of (I), mol-ecules are linked by an inter-molecular C-H⋯O hydrogen bond, which generates a C(8) zigzag chain running along [100]. Adjacent ...

2023

Writing in response to recent work by Kathleen Kryger, Griffin X. Zimmerman, and Ellen C. Carillo, Asao B. Inoue offers an expanded and compassionate discussion of labor-based grading, a practice that involves negotiating a set of classroom agreements with all of the students in a course to determine how much labor will be expected of students and how it will be accounted for or identified to earn particular final course grades. Inoue focuses his exploration of labor-based grading by asking, “How can labor-based grading evolve so that it addresses the concerns around inequitable access to or expectations of labor that students with disabilities, neurodivergencies, illnesses, or limited time in the semester may face?” The result is a thoughtful re-examination and re-thinking of labor-based grading in writing courses.