Cycloaddition of Diazoalkanes
نویسندگان
چکیده
منابع مشابه
Cycloaddition of Diphenylnitrilimine to 1,5-Benzodiazepines
The cycloaddition reaction of diphenylnitrilimine on the 1,5-benzodiazepines has been studied. New molecules of triazolobenzodiazepines type have been isolated and characterized.
متن کاملPREPARATION OF (CHLOROCARBONYL) PHENYLKETENB AND ITS CYCLOADDITION REACTION WITH BENZALDEHYDEV
Meldrum's acid, 2'5-diphenyl-1'3-dioxane-4'6-dione, was produced by [2+2] cycloadditions of the (chlorocarbony1)phenylketene with benzaldehyde. Acid hydrolysis of the meldrum's acid regenerated benzaldehyde and also yielded phenylacetic acid as the final product
متن کاملSome Borderline Cases of Cycloaddition
Common cases of cycloaddition include concerted (2 + 4) and stepwise (2 + 2) reactions which latter are usually easily recognizable as involving biradicals or dipolar ions. The addition in situ of dichioroketene to 2,4-hexadiene and 2butene is stereospecific, as required by the (2 + 2a) mechanism, but is followed by rapid base-catalysed rearrangement of the resulting 2,2-dichiorocyclobutanones ...
متن کاملCycloaddition of Azosulfones and Sulfonylimines
Ketene N,N-acetals ( I ) and ketene 0,N-acetals (2) containing hydrogen in the 2-position afford P-substitution products when treated with compounds such as isocyanates and isothiocyanates that contain an electrophilic double bond system[l~zl. However, azosulfones (3) [31 and N-sulfonylimines (7) [41 react with ketene N,N-acetals ( I ) by cycloaddition, affording the hitherto unknown 1,2-dihydr...
متن کاملThe alkylation of 2'-deoxyguanosine and of thymidine with diazoalkanes. Some observations on o-alkylation.
The reaction in ether-methanol between 2'-deoxyguanosine and diazomethane or its ethyl or n-butyl homologue gives 1-, O(6)- and 7-alkyl-2'-deoxyguanosine. N(2),O(6)-Dimethyl-2'-deoxyguanosine was also detected. The hydrolysis of the methyl and the ethyl derivatives gives the corresponding alkylguanines: the O(6)-alkyl-2'-deoxyguanosines were sequentially hydrolysed, first to 2-amino-6-alkoxypur...
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: Journal of Synthetic Organic Chemistry, Japan
سال: 1968
ISSN: 0037-9980,1883-6526
DOI: 10.5059/yukigoseikyokaishi.26.115