✍ Scribed by Alfred F. Noels
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📜 SIMILAR VOLUMES
The [2 + 1] cycloaddition reaction of electron-rich alkenes such as enol ethers with 9-diazo-9H-fluorene (1) is efficiently catalyzed by pentacarbonyl(η 2 -cis-cyclooctene)chromium(0) (2). This cyclopropanation reaction shows a pronounced preference for electron-rich C=C bonds, as demonstrated by th
## Abstract Linear organotin polymers with molecular weights (M~w~)in the range of 45 000 to 100 000 have been obtained by poly‐addition reactions involving organotin dihydrides and α,ω‐diynes, such as 1,5‐hexadiyne, 1,8‐nonadiyne, and 1,4‐diethynylbenzene. A number of 1‐stanna‐2,6‐cycloheptadiene
Reactions of ethyl 2-diazoacetate with aldehydo sugars and monosaccharide derivatives in their hemiacetal form are reported. The use of diethyl zinc led to an improvement of yields and shorter reaction times compared with neutral conditions as previously described. The resulting products represent p