Sputtr.com | Alternative Search Engine

Thiophe

The Newman - Kwart Rearrangement Revisited: Continuous ...

Introduction The Newman-Kwart rearrangement (NKR) is a valuable synthetic method for the transformation of phenols to thiophe-nolsviatheir O -and S -thiocarbamates. 1,2 From this transforma-tionvariousother sulfur-containing functional groups are readily accessible includingthioethers, 3 (homochiral ...

No Job Name

The samples of 2-thiophe-neaceticacid methyl ester[CAS 19432-68-9]and 3-thiophe-neaceticacid methyl ester[CAS 58414-52-1]were obtained fromFlukaand Lancaster, respectively, with a massic purity of greater than 97%.

ISNA - 14 Novel Aromatic Compounds

... Oligothiophene Molecula r Wires and Tripodal Anchoring Groups for Molecular Electronics Plenary Lecture 9 Atasever, Semih Oligothiophene - Diketopyrrolopyrrole Co - Oligomersfor Small Molecule Organic Solar Cells Poster 141 Bader, Melanie Functionalized α - Conjugated Cyclo[n]thiophe nes ...

Reactive Applications of Cyclic Alkylene Carbonates

Reactions with Aromatic Amines, Alcohols, and Thiols Alkylene carbonates, particularly 1,3-dioxolan-2-ones, can be used to alkylate active-hydrogen-containing aromatics such as phenol and phenolic resins, 15 thiophe-nols, 16 aniline,17 and the like in the presence of alkali catalysts.

Table I1

Synthesis of the trans- hydroxy sulfoxide 2b was accomplished, in two steps in an overall yield of 91% starting from epoxycyclopentene (5).1° Treatment of a 2.5 A4 solution of 5 in dry benzene at 0' with 1 equiv each of thiophe-no1 and triethylamine followed by stirring at 25' for 4 hr afforded ...

Copper(II) ion selective PVC membrane electrode based on S ...

... ethanebis(thioate) ( Figure 1 ) was synthesized according to the similar procedure described previously. 25 First, potassium ethoxide, produced by mixing 40 mmol (1.56 g) metallic potassium with 50 cm 3 absolute ethanol under nitrogen atmos-phere, reacted with 40 mmol (5.01 g) 2-amino thiophe-nol.

Kinetically Controlled Ligation for the Convergent Chemical ...

Trace (A) shows the starting point (i.e. before the addition of thiophe-nol). Overnight reaction under standard native chemical ligation conditions gave the full-lengthcrambin polypeptide, which was then folded without purification.

On the emergence of life via catalytic iron-sulphide membranes

Iron sulphur proteins are effective and versatile redox catalysts and Bonomi et al. (1985) have shown that simpler, non-protein ligands such as mercaptans and thiophe-nols are also effective chelating agents for iron-sulphur clusters, albeit within a more restricted redox range.

Vapor-Phase Oxidesulfurization (ODS) of Organosulfur ...

And the ODS of thiophe ne is given as an example. In situ FT-IR s pectros copy and s teady -state reactivity studies have revealed that for the selective oxidation reactions of thiophene to maleic anhy dride over various supported vanadia cataly sts proceed via thiom aleic anhy dride.

Synthesisandcharacterization of N -carbazoleend-capped ...

Alternatively, coupling of the resulting 7 with 2,7-thiophe nediboronic acid under Suzuki cross-coupling conditions afforded the target oligomer 9 as an orange-yellow solid in