Results 1 to 10 of about 1,987 (185)

Electrochemical Synthesis of Fluorinated Orthoesters from 1,3‐Benzodioxoles [PDF]

ChemistryOpen, 2019
Invited for this month's cover picture is the group of Professor Siegfried Waldvogel. The cover picture displays the robustness achieved by the installation of fluorinated alcohols on 1,3‐benzodioxoles, protecting the obtained orthoesters against acids ...
Siegfried R Waldvogel
exaly   +6 more sources

First Example of Direct Transformation of Alkylbenzenes to 1,3-Benzodioxoles by Oxidation with o-Chloranil

Molecules, 2002
The reaction of alkyl-substituted benzenes with o-chloranil at an elevated temperature was found to give 4,5,6,7-tetrachloro-1,3-benzodioxoles via benzylic oxidation and subsequent acetal formation, albeit in poor yields.
Tomoshige Kobayashi, Sheikh Maksudur Rahman   +1 more
exaly   +3 more sources

Chemical ecology of symbioses in cycads, an ancient plant lineage. [PDF]

New Phytol
Cycads are an ancient lineage of gymnosperms that maintain a plethora of symbiotic associationsfrom across the tree of life. They have myriad morphological, structural, physiological, chemical,and behavioral adaptations that position them as a unique ...
Salzman S, Bustos-Díaz ED, Whitaker MRL, Sierra AM, Cibrián-Jaramillo A, Barona-Gómez F, Villarreal Aguilar JC.   +6 more
europepmc   +3 more sources

Antimalarial and cytotoxic activities of roots and fruits fractions of Astrodaucus persicus extract [PDF]

Iranian Journal of Basic Medical Sciences, 2017
Objective(s):Astrodaucus persicus (Apiaceae) is one of the two species of this genus which grows in different parts of Iran. Roots of this plant were rich in benzodioxoles and used as food additive or salad in Iran and near countries.
Saied Goodarzi, Mehdi Nateghpour, Parina Asgharian, Abbas Hadjiakhoondi, Narguess Yassa, Saeed Tavakoli, Jalal Mirzaei, Leila Farivar, Afsaneh Motevalli Haghi, Zahra Tofighi   +9 more
doaj   +1 more source

1,3-Benzodioxol-5-ylmethanol [PDF]

Acta Crystallographica Section E Structure Reports Online, 2007
The title compound, C8H8O3, is an acid-protecting group used in the synthesis of peptides and as an accelerator in polymerization reactions. Its oxidation product, piperonal (heliotropine), is used in the flavouring and perfume industries. All the non-H atoms, except the O atom of the hydroxyl group, are coplanar (r.m.s. deviation 0.028 A). The crystal
Yathirajan, H. S., Bindya, S., Ashok, M. A., Narayana, B., Bolte, Michael   +4 more
openaire   +2 more sources

Characterization of volatile compounds of Perilla crop (Perilla frutescens L.) in South Korea

Applied Biological Chemistry, 2023
This study was performed to identify and profile the volatile compounds present in three different types of Perilla leaves collected from South Korea. Volatile compounds were analyzed by gas-chromatograph-mass spectrometry.
Kyu Jin Sa, So Jung Jang, Sookyeong Lee, Hyun Park, Jungeun Cho, Jungsook Sung, Ju Kyong Lee   +6 more
doaj   +1 more source

The Regioselective Arylation of 1,3‐Benzodioxoles [PDF]

Advanced Synthesis & Catalysis, 2021
AbstractThe direct arylation of 1,3‐benzodioxole and 2,2‐difluorobenzo[1,3]dioxole with 26 different aryl bromides yields the respective 4‐substitued products in yields of >80% requiring between 0.05–1 mol % Na2PdCl4, 30 mol % pivalic acid, 1.3 equivs. K2CO3 and ca. 250 equivs. of diethylacetamide per Pd at T=120 °C.
Yuki Kanai, Dorian Müller‐Borges, Herbert Plenio   +2 more
openaire   +1 more source

1-(1,3-Benzodioxol-5-yl)ethanone [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
In the title compound, C(9)H(8)O(3), the dihedral angle between the mean planes of the benzene and dioxole rings is 1.4 (8)°, with the dioxole group in a slightly distorted envelope configuration with the flap C atom displaced by 0.0645 Å from the plane through the other four atoms. In the crystal, weak inter-molecular C-H⋯O hydrogen-bond inter-actions
Jasinski, Jerry P., Butcher, Ray J., Hakim Al-arique, Q. N. M., Yathirajan, H. S., Narayana, B.   +4 more
openaire   +4 more sources

Antioxidant and a-amylase Inhibitory Activities and Phytocompounds of Clausena indica Fruits

Medicines, 2020
Background: Clausena indica fruit is commonly used for food ingredients and traditional medicines in tropical countries, however, information about its biological activities and chemical profiles has been inadequately reported.
La Hoang Anh, Tran Dang Xuan, Nguyen Thi Dieu Thuy, Nguyen Van Quan, Le Thu Trang   +4 more
doaj   +1 more source

Metal-free electrochemical synthesis of sulfonamides directly from (hetero)arenes, SO2, and amines [PDF]

, 2021
Sulfonamides are among the most important chemical motifs in pharmaceuticals and agrochemicals. However, there is no methodology to directly introduce the sulfonamide group to a non-prefunctionalized aromatic compound.
Blum, Stephan P., Karakaya, Tarik, Klapars, Artis, Schollmeyer, Dieter, Waldvogel, Siegfried R.   +4 more
core   +1 more source