soluble in MeCN, THF, CH2Cl2, toluene, benzene,
etc.; not compatible with protic solvents, acetone, and other
ketones. Dipolar aprotic solvents (DMF, DMSO, HMPA, etc.)
coordinate Si, thereby increasing the reactivity of C3H5SiCl3
with electrophiles.
物理描述:
Allyltrichlorosilane, stabilized appears as a colorless liquid with a pungent odor. Flash point of 95°F. Corrosive to metals and tissue.
颜色/状态:
Colorless liquid
气味:
Pungent, irritating odor
蒸汽密度:
6.05 (Air = 1)
蒸汽压力:
7.066 kPa (53.0 mm Hg) at 47.5 °C
分解:
The silanes decomp at elevated temp to liberate hydrogen and deposit a high purity silicon, which leads to some of the principal uses of silanes. /Silanes/
Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Silane, Chlorosilane, and Related Compounds/
Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Anticipate seizures and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal (refer to ingestion protocol in Section Three ... . Cover skin burns with sterile dressings after decontamination ... . /Silane, Chlorosilane, and Related Compounds/
Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Early intubation at the first sign of upper airway obstruction may be necessary. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Treat seizures with diazepam or lorazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Silane, Chlorosilane, and related compounds/
/SIGNS AND SYMPTOMS/ Acute inhalation exposure may result in sneezing, choking, laryngitis, dyspnea (shortness of breath), respiratory tract irritation, and chest pain. Higher exposure can cause pulmonary edema, a medical emergency that can be delayed for several hours. This can cause death. Bleeding of nose and gums, ulceration of the nasal and oral mucosa, pulmonary edema, chronic bronchitis, and pneumonia may also occur. If the eyes have come in contact with dimethyldichlorosilane, irritation, pain, swelling, corneal erosion, and blindness may result. Dermatitis (red, inflamed skin), severe burns, pain, and shock generally follow dermal exposure. Inhalation irritates mucous membranes. Severe gastrointestinal damage may occur. Vapors cause severe eye and lung injury. Upon short contact, second and third degree burns may occur. Signs and symptoms of acute ingestion of dimethyldichlorosilane may be severe and include increased salivation, intense thirst, difficulty swallowing, chills, pain, and shock. Oral, esophageal, and stomach burns are common. /Dimethyldichlorosilane/
[EN] PROTEIN TYROSINE PHOSPHATASE INHIBITORS AND METHODS OF USE THEREOF<br/>[FR] INHIBITEURS DE PROTÉINE TYROSINE PHOSPHATASE ET LEURS PROCÉDÉS D'UTILISATION
申请人:CALICO LIFE SCIENCES LLC
公开号:WO2020186199A1
公开(公告)日:2020-09-17
Provided herein are compounds, compositions, and methods useful for inhibiting protein tyrosine phosphatase, e.g., protein tyrosine phosphatase non-receptor type 2 (PTPN2) and/or protein tyrosine phosphatase non-receptor type 1 (PTPN1), and for treating related diseases, disorders and conditions favorably responsive to PTPN 1 or PTPN2 inhibitor treatment, e.g., a cancer or a metabolic disease.
Lewis base catalysis proved to be more efficient, and the highest asymmetric induction for allylation of ortho-fluorobenzaldehyde reached 82 % ee, which is comparable to other used catalytic conditions. In cases of ortho-vinylbenzaldehyde, the Keck allylation provided the product in 88 % ee. An enantioenriched homoallylicalcohol was used as the starting material for the synthesis of a sertraline
我们报告了在路易斯碱(N,N-二氧化物)、路易斯酸(凯克烯丙基化)和布朗斯台德酸催化下邻位取代苯甲醛烯丙基化的系统研究。邻-卤代苯甲醛被用作醛底物,并特别关注邻-乙烯基和炔基苯甲醛,它们可能作为有趣的合成子用于制备更复杂的手性化合物。在催化条件下实现了类似的对映选择性。在邻卤苯甲醛的情况下,路易斯碱催化被证明更有效,邻氟苯甲醛烯丙基化的最高不对称诱导达到 82% ee,与其他使用的催化条件相当。在邻乙烯基苯甲醛的情况下,Keck 烯丙基化提供 88% ee 的产物。
Spin chemistry of organometallic compounds
作者:Marc B. Taraban、Alexander I. Kruppa、Nikolai E. Polyakov、Mikhail G. Voronkov、Vladimir I. Rakhlin、Stanislav V. Grigor'ev、Olga S. Volkova、Rudolph G. Mirskov、Tatyana V. Leshina
DOI:10.1016/s0022-328x(02)01662-5
日期:2002.9
Two instances have been considered demonstrating the influence of organoelement substituent on the reactivity of radicals generated from R3MCH2CHCH2 (M=Si or Sn) in photoinduced interaction with (Me3Si)2NBr. CIDNP studies has allowed to identify two different reaction mechanisms for M=Si or M=Sn which end up in two different sets of reaction products.
Scope, Limitations and Mechanistic Analysis of the HyperBTM‐Catalyzed Acylative Kinetic Resolution of Tertiary Heterocyclic Alcohols**
作者:Samuel M. Smith、Mark D. Greenhalgh、Taisiia Feoktistova、Daniel M. Walden、James E. Taylor、David B. Cordes、Alexandra M. Z. Slawin、Paul Ha‐Yeon Cheong、Andrew D. Smith
DOI:10.1002/ejoc.202101111
日期:2022.1.11
isothiourea HyperBTM catalyzes the acylative kinetic resolution of a wide range of tertiary heterocyclic alcohols under mild conditions with high selectivity. The synthetic utility of the methodology has been demonstrated with the preparation of two bioactive targets. Kinetic analysis reveals a fractional reaction order with respect to the alcohol concentration.
A C=O⋅⋅⋅Isothiouronium Interaction Dictates Enantiodiscrimination in Acylative Kinetic Resolutions of Tertiary Heterocyclic Alcohols
作者:Mark D. Greenhalgh、Samuel M. Smith、Daniel M. Walden、James E. Taylor、Zamira Brice、Emily R. T. Robinson、Charlene Fallan、David B. Cordes、Alexandra M. Z. Slawin、H. Camille Richardson、Markas A. Grove、Paul Ha‐Yeon Cheong、Andrew D. Smith
DOI:10.1002/anie.201712456
日期:2018.3.12
C=O⋅⋅⋅isothiouronium interaction as key to efficient enantiodiscrimination in the kineticresolution of tertiary heterocyclic alcohols bearing up to three potential recognition motifs at the stereogenic tertiary carbinol center. This discrimination was exploited in the isothiourea‐catalyzed acylative kineticresolution of tertiary heterocyclic alcohols (38 examples, s factors up to >200). The reaction proceeds at low