Synthesis and Beckmann rearrangement of novel (Z)-2-organylselanyl ketoximes: promising agents against grapevine anthracnose infection

Recent Advances in Organoselenium Catalysis

Abstract:

: Organoselenium chemistry has developed as an important tool in the field of synthetic and medicinal chemistry. Various organoselenium reagents have been developed and used successfully to achieve different organic transformations such as the selenocyclizations, oxyselenenylations and selenoxide eliminations etc. Additionally, the potential of organoselenium reagents is not limited their use as stoichiometric reagents but they have successfully used as organocatalyst in number of synthetic transformations. Various organic and inorganic oxidants have been identified as terminal oxidants to regenerate the active catalytic specie. In this review article, the recent progress of organoselenium reagents in catalysis is being highlighted along with their asymmetric variants.

Organocatalytic enantioselective Diels–Alder reaction between hydroxymaleimides and in situ generated nitrosoalkenes for direct preparation of chiral hemiketals with 1,2-oxazine skeleton

Organocatalytic Enantioselective IEDDA reaction between hydroxymaleimides and in situ generated nitrosoalkenes has been disclosed, a series of chiral hemiketals containing 5,6-dihydro-4H-l,2-oxazines and succinimide frameworks have been prepared.

Beckmann rearrangement catalysis: a review of recent advances

The Beckmann rearrangement is an elegant transformation and has been used to great success in the synthesis of natural products and pharmaceuticals. In this review, the role of different catalysts as well as different medium for Beckmann rearrangement has been discussed over the last 20 years.

Selenium reagents as catalysts

Organoselenium chemistry has become an important tool in synthetic and medicinal chemistry.

Crystal structure of bis(acetato-κ1 O)-bis(1-(pyridin-2-yl)ethan-1-one oxime-κ2 N,N′)zinc(II), C18H22N4O6Zn

C18H22N4O6Zn, monoclinic, P21/c (no. 14), a = 9.9422(18) Å, b = 16.904(3) Å, c = 15.5509(19) Å, β = 128.569(7)°, V = 2043.4(6) Å3, Z = 4, R gt(F) = 0.0347, wR ref(F 2) = 0.0663, T = 293(2) K.

Crystal structure of aqua(1-(2-pyridyl)ethanone oxime-κ2 N,N′)(1-(2-pyridyl)ethanone oximato-κ2 N,N′) nitrate monohydrate, C14H19N5O7Cu

C14H19N5O7Cu, triclinic, P1̅ (no. 2), a = 10.8164(15) Å, b = 11.4831(17) Å, c = 15.423(2) Å, α = 101.035(3)°, β = 100.538(2)°, γ = 101.708(2)°, V = 1791.5(4) Å3, Z = 4, R gt(F) = 0.0416, wR ref(F 2) = 0.1131, T = 298(2) K.