Total Synthesis of C31-Methyl Ketone Apocarotenoids: Sintaxanthin and (3R)-3-Hydroxysintaxanthin.

Methyl ethyl ketone and methyl isobutyl ketone not carcinogenic.

Methyl Ethyl Ketone and Methyl Isobutyl Ketone Not Carcinogenic The April 22, 1993, issue of Environmental Health Perspectives contained a commentary by Legator and Strawn entitled "Public Health Policies Regarding Hazardous Waste Sites and Cigarette Smoking: An Argument by Analogy." Although the article does not include any discussion of either methyl ethyl ketone (MEK) or methyl isobutyl keto...

Engineering of bacterial methyl ketone synthesis for biofuels.

We have engineered Escherichia coli to overproduce saturated and monounsaturated aliphatic methyl ketones in the C₁₁ to C₁₅ (diesel) range; this group of methyl ketones includes 2-undecanone and 2-tridecanone, which are of importance to the flavor and fragrance industry and also have favorable cetane numbers (as we report here). We describe specific improvements that resulted in a 700-fold enha...

(3R,4S,5S)-4-Hydr­oxy-3-methyl-5-[(2S,3R)-3-methyl­pent-4-en-2-yl]tetra­hydro­furan-2-one

The title compound, C(11)H(18)O(3), was synthesized to prove the relative configuration of the corresponding acyclic C1-C8 stereopentade. It crystallizes with two mol-ecules in the asymmetric unit, which show only slight differences. The mol-ecules are linked via O-H⋯O hydrogen bonds, resulting in two crystallographically independent chains of mol-ecules propagating in the a-axis direction. The...

Methyl ethyl ketone peroxide

synthesis of sulfides from alcohols and thiols in solvent-freeconditions and deoxygenation of sulfoxides

کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...