Interrupted Baeyer–Villiger Rearrangement: Building A Stereoelectronic Trap for the Criegee Intermediate
نویسندگان
چکیده
منابع مشابه
Infrared absorption spectrum of the simplest Criegee intermediate CH2OO.
The Criegee intermediates are carbonyl oxides postulated to play key roles in the reactions of ozone with unsaturated hydrocarbons; these reactions constitute an important mechanism for the removal of unsaturated hydrocarbons and for the production of OH in the atmosphere. Here, we report the transient infrared (IR) absorption spectrum of the simplest Criegee intermediate CH2OO, produced from C...
متن کاملThe UV absorption spectrum of the simplest Criegee intermediate CH2OO.
SO2 scavenging and self-reaction of CH2OO were utilized for the decay of CH2OO to extract the absorption spectrum of CH2OO under bulk conditions. Absolute absorption cross sections of CH2OO at 308.4 and 351.8 nm were obtained from laser-depletion measurements in a jet-cooled molecular beam. The peak cross section is (1.23 ± 0.18) × 10(-17) cm(2) at 340 nm.
متن کاملCriegee intermediate-hydrogen sulfide chemistry at the air/water interface.
We carry out Born-Oppenheimer molecular dynamic simulations to show that the reaction between the smallest Criegee intermediate, CH2OO, and hydrogen sulfide (H2S) at the air/water interface can be observed within few picoseconds. The reaction follows both concerted and stepwise mechanisms with former being the dominant reaction pathway. The concerted reaction proceeds with or without the involv...
متن کاملUV absorption spectrum of the C2 Criegee intermediate CH3CHOO.
The UV spectrum of CH3CHOO was measured by transient absorption in a flow cell at 295 K. The absolute absorption cross sections of CH3CHOO were measured by laser depletion in a molecular beam to be (1.06 ± 0.09) × 10(-17) cm(2) molecule(-1) at 308 nm and (9.7 ± 0.6) × 10(-18) cm(2) molecule(-1) at 352 nm. After scaling the UV spectrum of CH3CHOO to the absolute cross section at 308 nm, the peak...
متن کاملBuilding a better Trap.
A wide variety of antiangiogenic agents are now being tested in late-stage cancer patients as stand-alone agents or in combination with standard therapy (1). Although there have been mixed reviews so far, a success story appears to be emerging (2). In a recently concluded Phase III clinical trial involving patients with advanced colon cancer, Avastin [antivascular endothelial growth factor (VEG...
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ژورنال
عنوان ژورنال: Angewandte Chemie
سال: 2018
ISSN: 0044-8249,1521-3757
DOI: 10.1002/ange.201712651