A NOVEL VULCANIZATION BY 1, 3-DIPOLAR ADDITION (I)
نویسندگان
چکیده
منابع مشابه
Synthesis and Antimicrobial activity of Novel Isoxazolines by 1, 3-Dipolar Cycloaddition Reactions
Nitrile oxides were generated by the catalytic dehydrogenation of aromatic aldehyde oximes 2a-g with chloramine-T as oxidizing agent. The 1,3-dipolar cycloaddition of in situ generated nitrile oxides with ethyl oleate 1 produced a series of new ethyl 8-(3-aryl-4-octyl-4,5-dihydroisoxazol-5-yl)octanoate 3a-g in 6584% yield. Some of the synthesized cycloadducts have exhibited moderate to good ant...
متن کاملAccess to functionalised silver(I) and gold(I) N-heterocyclic carbenes by [2 + 3] dipolar cycloadditions.
A new strategy was developed for the modification of silver(I) and gold(I) N-heterocyclic carbenes. Azido groups were grafted and used either by copper-catalysed azide-alkyne cycloaddition before metallation or by thermal and "strain-promoted" 1,3-dipolar cycloaddition after metallation to functionalise the metal-NHCs.
متن کاملSynthesis of fluorophosphonylated acyclic nucleotide analogues via copper(I)-catalyzed Huisgen 1-3 dipolar cycloaddition.
Preparation of several acyclonucleosides containing both a difluoromethylphosphonate group and a triazole moiety is described starting from a difluorophosphonosulfide. The key step of the synthesis involves a copper(I)-catalyzed Huisgen 1-3 dipolar cycloaddition between difluorophosphonylated azides and propargylated nucleobases derived from thymine and 2-amino-6-chloropurine.
متن کاملA competitive Diels-Alder/1, 3-dipolar cycloaddition reaction of1-H-imidazole 3-oxide toward sulfonyl methane. A DFT study on the energetic and regioselectivity
The dual diene/1,3-dipolar character of 1-H-imidazole 3-oxide, HIO 1, allows this compound toparticipate in a competitive Diels-Alder (DA)/1,3-dipolar cycloaddition (13DC) reaction toward C=Sdouble bond of the electro-deficient sulfonyl methane SFM 2. The B3LYP/6-311++G(d,p) calculatedrelative Gibbs free energies indicate that among the studied 13DC and DA reactions, former iscompletely preferr...
متن کاملSYNTHESIS OF OXAZOLO [3, 2-b] 1, 2, 4- TRIAZINES A NOVEL HETEROCYCLIC SYSTEM
The synthesis of 6- methyl- 2- phenyl- 7H- oxazolo [3,2-b] 1,2,4-Triazine- 7-one (6, R=Ph) and its 2-P- bromophenyl analogue to the two members of a new heterocyclic system is described
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: NIPPON GOMU KYOKAISHI
سال: 1970
ISSN: 1884-0442,0029-022X
DOI: 10.2324/gomu.43.307