17471-49-7

Upstream product

• 6308-02-7 1,1,4,4-Tetramethyl-1,2,3,4-tetrahydronaphthalen-2-one 
• 5455-94-7 2,2,5,5-tetramethyltetrahydro-3-oxofuran 
• 71-43-2 benzene 
• 142656-42-6 (Z)-3,3,10,10-Tetramethyl-cyclodec-6-ene-4,8-diyne-1,2-diol 
• 142656-43-7 (Z)-3,3,10,10-Tetramethyl-cyclodec-6-ene-4,8-diyne-1,2-dione 
• 142-30-3 2,5-dihydroxy-2,5-dimethyl-3-hexyne 

Downstream Products

• 53405-01-9 2,2'-dimethyl-2,2'-o-phenylene-di-propionic acid 
• 76486-75-4 3'-(Diethoxymethylen)-1,4-dihydro-1,1,4,4-tetramethyl-2',2',2'-triphenylspiro5>oxaphosphetan>-3-on 
• 62157-76-0 4-Methyl-benzoic acid 1,1,4,4-tetramethyl-3-oxo-1,2,3,4-tetrahydro-naphthalen-2-yl ester 
• 62157-75-9 3-Hydroxy-1,1,4,4-tetramethyl-3-(4-methyl-benzoyl)-3,4-dihydro-1H-naphthalen-2-one 
• 62157-79-3 3-Benzoyl-3-hydroxy-1,1,4,4-tetramethyl-3,4-dihydro-1H-naphthalen-2-one 
• 62157-80-6 Benzoic acid 1,1,4,4-tetramethyl-3-oxo-1,2,3,4-tetrahydro-naphthalen-2-yl ester 
• 62157-73-7 3-Hydroxy-3-(4-methoxy-benzoyl)-1,1,4,4-tetramethyl-3,4-dihydro-1H-naphthalen-2-one 
• 62157-74-8 4-Methoxy-benzoic acid 1,1,4,4-tetramethyl-3-oxo-1,2,3,4-tetrahydro-naphthalen-2-yl ester 
• 62157-77-1 3-Hydroxy-3-(4-isopropyl-benzoyl)-1,1,4,4-tetramethyl-3,4-dihydro-1H-naphthalen-2-one 
• 62157-78-2 4-Isopropyl-benzoic acid 1,1,4,4-tetramethyl-3-oxo-1,2,3,4-tetrahydro-naphthalen-2-yl ester 
• 196494-54-9 3-(2-hydroxy-4,5-dimethylphenylamino)-1,1,4,4-tetramethyltetralin-2-one 
• 7403-06-7 1,2-benzenediacetic acid α,α,α',Sa'-tetramethyldimethyl ester 
• 5557-93-7 o-Isopropyl-α-methylstyrene 
• 92863-33-7 o-Phenylen-di- 

Relevant academic research and scientific papers

Electron Spin Resonance Spectra and Conformations of Group 2 Ion Complexes with a Semidione Ligand

The triplet states of the complexes formed between the semidione 1,1,4,4-tetramethyltetralin-2,3-dione and Be(2+), Mg(2+), Ca(2+), Sr(2+), Ba(2+), Zn(2+) have been studied by e.s.r. spectroscopy in frozen solutions of 2-methyl-tetrahydrofuran.The e.s.r. spectrum of has been attributed to a quartet state.The zero-field splitting parameters for the complexes have been obtained and compared with those calculated by electron dipole-dipole interaction for a number of conformations of the complexes.The conformations giving the best fit are reported.The discrepancy between experimental and calculated zero-field splitting parameters for the complexes of Sr(2+) and Ba(2+) has been explained by an additional spin-orbit contribution.

Synthesis and oxidative behaviour of reduced indenoquinoxalines and benzophenazines

New routes to tetracyclic quinoxalines have been explored and their oxidative behaviour has been examined.Only if such compounds are devoid of benzylic hydrogen atoms are the corresponding cation radicals stable.Attempts to prepare certain polymethylated quinoxalines failed because of steric problems, and evidence is presented to show that in the case of some monohydrochloride salts proton migration between two nitrogen atoms is discernable through 1H NMR spectroscopy.

THE EFFECTS OF SUBSTITUENS AND SOLVENT POLARITY ON PHOTOCHEMICAL SIGMATROPIC SHIFTS. EXPERIMENTAL EVIDENCE IN FAVOUR OF THE OCCURRENCE OF SUDDEN POLARIZATION IN ACYCLIC ALKENES

Furher experimental evidence regarding the occurence of sudden polarization in acyclic alkenes is presented.It is shown that the yield of formation of the product derived from an intramolecular photochemical -OH shift in the 1 is dependent only on the polarity of the solvent employed.This result could be well explained in terms of a stabilization of the zwitterionic intermediate formed upon irradiation of 1 by reorientation polarization of the dipole solvent molecules.Besides this, it was found that replacement of the alkyl group at the terminal carbon atom of the C3-C9 exocyclic double bond in 1 by a phenyl substituent led to the occurence of a photochemical -H shift.This directive effect of the substituents at the exocyclic double bond could be well explained on the basis of the sudden polarization model.