Results 231 to 240 of about 1,138,126 (397)

Petroleum and Natural Gas in Indiana. W. M. Logan

, 1921

openalex   +1 more source

The petroleum fields of the Pacific coast of Alaska, with an account of the Bering River coal deposits [PDF]

, 1905
G. C. Martin
openalex   +1 more source

Comparative study of laboratory and portable spot permeability measurements in bioturbated carbonate strata. [PDF]

Sci Rep
Al-Lehyani A, Eltom HA, Al-Shuhail A, Abdullah E, El-Husseiny A.   +4 more
europepmc   +1 more source

Asymmetric Synthesis of Highly Substituted Spiro[2H‐pyrrole‐2,3‐Succinimide] Derivatives by Copper‐Catalyzed Post‐Ugi Reactions

Advanced Synthesis &Catalysis, EarlyView.
Abstract Herein we present a novel one‐pot methodology for the synthesis of enantioenriched 2H‐pyrrolespirosuccinimides by copper‐catalyzed reactions on Ugi adducts derived from enantiopure α‐alkylbenzyl amines through a chirality transfer process. We have proposed a mechanism, supported by density functional theory (DFT) calculations, where a hydrogen
Javier Gómez‐Ayuso, Israel Carreira‐Barral, Roberto Quesada, María García‐Valverde   +3 more
wiley   +1 more source

Isolation and characterization of novel hydrocarbon-degrading bacteria from oil polluted soil near Nacharam, Hyderabad, India. [PDF]

Sci Rep
Zaman SAU, Bhrdwaj A, Nayarisseri A, Khazanehdari KA, Bhuyan R.   +4 more
europepmc   +1 more source

Synthesis of spirolactones from carbonyls via carboborylation of N‐sulfonylhydrazones with alkoxycarbonylalkylboronic acids

Advanced Synthesis &Catalysis, Accepted Article.
A straightforward synthesis of spirolactones from carbonyls via N‐tosylhydrazones is described. The process consist in the reaction between the N‐tosylhydrazone and ethoxycarbonylethylboronic acid or ethoxycarbonylpropylboronic acid, leading to spiro γ‐butyrolactones or δ‐valerolactones respectively. The transformation takes place by carboborylation of
Lucía López, Sara Filgueira, María-Paz Cabal, Alfonso Carlos Valdés-Gómez   +3 more
wiley   +1 more source

The fractionation of crude petroleum in capillary diffusion [PDF]

, 1908
J. Elliott Gilpin, Marshall P. Cram, David T. Day   +2 more
openalex   +1 more source

Preparation and characterization of biodegradable flexible polyurethane foam containing acetylated tapioca starch and Castor oil. [PDF]

Sci Rep
Abdollahi Moghaddam MR, Mahdavi M, Beigbabaee A, Heidary M, Hesarinejad MA.   +4 more
europepmc   +1 more source

Pot‐Economical Synthesis of Fluorinated Pyrrolizinone Derivatives

Advanced Synthesis &Catalysis, EarlyView.
Abstract A new family of fluorinated dihydropyrrolizinones has been synthesized starting from fluorinated enamino amides and aliphatic conjugated ketones. The reaction comprises a cross metathesis reaction followed by a tandem cycloaromatization/ enamine hydrolysis/ intramolecular Friedel‐Crafts alkylation sequence.
Lidia Prieto, Marcos Escolano, Daniel Gaviña, Luis Paredes‐Soler, Santiago Díaz‐Oltra, María Sánchez‐Roselló, Carlos del Pozo   +6 more
wiley   +1 more source

Petroleum withdrawals and restorations affecting the public domain,

, 1917
Max W. Ball, Lucetta Woodbridge Stockbridge   +1 more
openalex   +2 more sources