Zobrazeno 1 - 10
of 109
pro vyhledávání: '"W. H. Laarhoven"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 86:821-829
The mixture of products formed by irradiation of dibenzyl sulfide has been analyzed by G.L.C. Dibenzyl and phenanthrene appeared to be the major products. In addition, several other products were characterized. Benzyl 1,2-diphenylethyl sulfide was fo
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 100:256-262
The formation of a 1,2,4-cyclohexatriene derivative (cf. 7) from the singlet-excited cis-butenyne is thought to be the primary reaction step in the photocyclization of 1,4-diarylbutenynes. This very reactive intermediate can yield the end-product alo
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 87:1415-1420
Reactions analogous to the photolytic formation of dibenzyl, stilbene and phenanthrene from dibenzyl sulfide have been observed on irradiation of various alkyl aralkyl sulfides. Exceptions were found in alkyl α-alkylbenzyl sulfides containing a hydr
Autor:
N. Berendsen, W. H. Laarhoven
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 105:367-371
Irradiation of the title compound (6) with a broad spectrum lamp at room temperature afforded 2-methylidene-1,2,3,4-tetrahydronaphthalene (8) and 2-methylnaphthalene (7). Apart from 8, irradiation of 6 at −45°C also afforded 5-methylbenzobicyclo[3
Autor:
J. J. M. Lamberts, W. H. Laarhoven
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 103:131-135
The photochemical behaviour of 4-phenyl-1,2-dihydronaphthalene (8) is similar to that of unsubstituted 1,2-dihydronaphthalene (1). The main product is the 1-phenylbenzobicyclo[3.1.0]hex-2-ene (10). 3-Phenyl- and 1-phenyl-1,2-dihydronaphthalenes (14 a
Autor:
W. H. Laarhoven, Th.J.H.M. Cuppen
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 95:165-168
The regular photocyclisation of α-(9-phenanthryl)stilbene (1) to 9-phenylbenzo[g]chrysene (2) is accompanied by formation of 4,5-diphenylacephenanthrylene (3). A similar photocyclisation, providing a five-membered ring, occurs on irradiation of 1-(9
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 100:263-267
Irradiation of 1-(9-phenanthryl)-4-phenylbutenyne (1) in aprotic solvents containing oxygen gives two products, namely a photocyclization product, 1-phenyltriphenylene 3, as is usually formed from diarylbutenynes, and a photooxidation product (2), de
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 80:775-791
Syntheses of a series of 4,4′-dimethoxystilbenes, substituted with methyl or ethyl groups in ortho and α-positions, including the new compounds 2,2′,6,6′-tetramethyl- ; α,2-dimethyl- ; α,2′-dimethyl- ; α,2,2′-trimethyl- and α,α′,2-t
Autor:
W. H. Laarhoven
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 102:241-254
Autor:
W. H. Laarhoven, R. J. F. Nivard
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 84:1478-1495
Charge-transfer absorption spectra of tetracyanoethylene complexes with a number of stilbene derivatives as donor molecules (1-15, Table 1) have been measured in dichloromethane as solvent. Job tests showed that the complexes present in the solutions