欧盟法规
REACH注册ECHA物质ECHA物质C&L通报REACH预注册2-甲基-2-辛醇置于lithium Aluminium Tetrahydride,氢溴酸,Zinc Sulfide,Lithium Bromide体系中,用 乙醚,二氯甲烷,水 用作溶剂,化学反应 14.0H,反应生成叔壬基硫醇
参考文献:Structure-odor Correlations In Homologous Series Of Alkanethiols And Attempts To Predict Odor Thresholds By 3D-Qsar Studies
标题:Structure-odor Correlations In Homologous Series Of Alkanethiols And Attempts To Predict Odor Thresholds By 3D-Qsar Studies
摘要:Homologous Series Of Alkane-1-Thiols,Alkane-2-Thiols,Alkane-3-Thiols,2-Methylalkane-1-Thiols,2-Methylalkane-3-Thiols,2-Methylalkane-2-Thiols,And Alkane-1,-Dithiols Were Synthesized To Study The Influence Of Structural Changes On Odor Qualities And Odor Thresholds. In Particular,The Odor Thresholds Were Strongly Influenced By Steric Effects: In All Homologous Series A Minimum Was Observed For Thiols With Five To Seven Carbon Atoms,Whereas Increasing The Chain Length Led To An Exponential Increase In The Odor Threshold. Tertiary Alkanethiols Revealed Clearly Lower Odor Thresholds Than Found For Primary Or Secondary Thiols,Whereas Neither A Second Mercapto Group In The Molecule Nor An Additional Methyl Substitution Lowered The Threshold. To Investigate The Impact Of The Sh Group,Odor Thresholds And Odor Qualities Of Thiols Were Compared To Those Of The Corresponding Alcohols And (Methylthio)Alkanes. Replacement Of The Sh Group By An Oh Group As Well As S-Methylation Of The Thiols Significantly Increased The Odor Thresholds. By Using Comparative Molecular Field Analysis,A 3D Quantitative Structureactivity Relationship Model Was Created,Which Was Able To Simulate The Odor Thresholds Of Alkanethiols In Good Agreement With The Experimental Results. NMR And Mass Spectrometric Data For 46 Sulfur-Containing Compounds Are Additionally Supplied.
Doi:10.1021/jf506135C
专利信息
专利号:US-2024309024-A1
优先权日:2023-03-14
标题 :Direct synthesis of alkenylhalosilanes
发明人:LEWIS KENRICK MARTIN; ZHU YANJUN; BYRNE CHRISTOPHER M
权利人:MOMENTIVE PERFORMANCE MAT INC
摘要:A process for the direct synthesis of alkenylhalosilane monomers. Forming a slurry of liquid and copper-activated silicon from fresh silicon, cyclone fines and/or fine dust from silicon grinding, ultrafines and/or spent contact mass from the Direct Synthesis of alkylhalosilanes and arylhalosilanes, in a thermally stable solvent. Reacting the silanes by agitating the slurry with at least one unsaturated aliphatic or cycloaliphatic organohalide of the formula R1X, and optionally an organohalosilane and/or hydrogen halide, in the presence of a polymerization inhibiting Lewis base additive, at a reaction time, temperature and pressure effective to produce alkenylhalosilanes having the formulae, R1SiHX2, R12SiHX, R13SiX, R1SiX3, and R12SiX2 or mixtures thereof.
专利号:US-4891445-A
优先权日:1987-02-17
标题 :Synthesis of tertiary mercaptans from isobutylene homopolymers
发明人:ARRETZ EMMANUEL
权利人:ELF AQUITAINE
摘要:The invention relates to the synthesis of tertiary mercaptans from isobutylene homopolymers and from hydrogen sulphide by means of heterogeneous catalysis. In the processs according to the invention, the reaction is carried out at a temperature below 45 DEG C., preferably between 0 DEG and 35 DEG C., in the presence of a catalyst consisting of a dry cation exchange resin. Excellent yields of tertiary mercaptan are thus obtained, while the formation of undesirable byproducts is virtually avoided.
专利号:US-11685712-B2
优先权日:2019-12-30
标 题 :Synthesis of monofunctional thiuram accelerator
发明人:SPILKER THOMAS FRANKLIN; Jin ji yang; FEHER FRANK J
权利人:GOODYEAR TIRE & RUBBER
摘要:The present invention provides a route for synthesizing monofunctional thiuram compounds that is safe, environmentally friendly, and cost effective. This method specifically involves synthesizing a monofunctional thiuram by (1) reacting a tetraorganylthiuram disulfide with an organyl mercaptan to produce the monofunctional thiuram and a dithiocarbamate metal salt or a dithiocarbamate metalloid salt under basic conditions, (2) separating the monofunctional thiuram in an organic phase from the dithiocarbamate metal salt or the dithiocarbamate metalloid salt in an aqueous phase, and (3) recovering the monofunctional thiuram from the aqueous phase. The monofunctional thiuram compounds made in accordance with this invention are of particular value as accelerators for use in the vulcanization of rubber. The use of these monofunctional thiuram compounds as accelerators provides good cure rates and as well as good scorch safety.
专利号:US-11274247-B2
优先权日:2017-02-02
标题:Methods for the synthesis of transition metal dichalcogenide (TMDC) nanoparticles
发明人:DANIELS STEVEN
权利人:NANOCO TECHNOLOGIES LTD
摘要:Methods of synthesizing transition metal dichalcogenide nanoparticles include forming a metal-amine complex, combining the metal-amine complex with a chalcogen source in at least one solvent to form a solution, heating the solution to a first temperature for a first period of time, and heating the solution to a second temperature that is higher than the first temperature for a second period of time.
专利号:US-10883046-B2
优先权日:2017-02-02
标题:Synthesis of luminescent 2D layered materials using an amine-met al complex and a slow sulfur-releasing precursor
专利号:US-2023029068-A1
优先权日:2019-12-30
标题:Synthesis of monofunctional thiuram accelerator